v.distance: fix typo in fatal error msg (#163)

* fix typo in fatal error msg
* fix typo in doc, delete unnecessary and wrong comment
* fix typo also in po files (by @neteler)

locale/po/grassmods_ar.po

@@ -41139,7 +41139,7 @@ msgstr "نوع غير معروف"
 
 #: ../vector/v.distance/main.c:674
 #, fuzzy
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr "%d فئات محملة من الجدول\n"
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_bn.po

@@ -36610,7 +36610,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_cs.po

@@ -36859,7 +36859,7 @@ msgid "Incompatible column types"
 msgstr "Nekompatibilní typy sloupců"
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_de.po

@@ -36739,7 +36739,7 @@ msgid "Incompatible column types"
 msgstr "Inkompatible Spaltentypen."
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_el.po

@@ -36621,7 +36621,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_es.po

@@ -36766,7 +36766,7 @@ msgid "Incompatible column types"
 msgstr "Tipos de columnas incompatibles"
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr "No hay categorías para 'from' para tipo y capa seleccionados"
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_fi.po

@@ -36612,7 +36612,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_fr.po

@@ -36698,7 +36698,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_hu.po

@@ -36611,7 +36611,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_id_ID.po

@@ -36542,7 +36542,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_it.po

@@ -36707,7 +36707,7 @@ msgid "Incompatible column types"
 msgstr "Tipi di colonna incompatibili"
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_ja.po

@@ -36647,7 +36647,7 @@ msgid "Incompatible column types"
 msgstr "不適合の列型"
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_ko.po

@@ -36563,7 +36563,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_lv.po

@@ -38185,7 +38185,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_ml.po

@@ -36610,7 +36610,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_pl.po

@@ -36768,7 +36768,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_pt.po

@@ -36642,7 +36642,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_pt_BR.po

@@ -36644,7 +36644,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_ro.po

@@ -36688,7 +36688,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_ru.po

@@ -36748,7 +36748,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_si.po

@@ -36610,7 +36610,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_sl.po

@@ -41426,7 +41426,7 @@ msgstr "Nepoznan tip"
 
 #: ../vector/v.distance/main.c:674
 #, fuzzy
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr "%d kategorij naloženih iz tabele\n"
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_ta.po

@@ -36613,7 +36613,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_th.po

@@ -36550,7 +36550,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_tr.po

@@ -36640,7 +36640,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_uk.po

@@ -36745,7 +36745,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_vi.po

@@ -36550,7 +36550,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_zh.po

@@ -36555,7 +36555,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

locale/po/grassmods_zh_CN.po

@@ -34070,7 +34070,7 @@ msgid "Incompatible column types"
 msgstr ""
 
 #: ../vector/v.distance/main.c:674
-msgid "No categories for 'from' for slected type and layer"
+msgid "No categories for 'from' for selected type and layer"
 msgstr ""
 
 #: ../vector/v.distance/main.c:702

vector/v.distance/main.c

@@ -671,7 +671,7 @@ int main(int argc, char *argv[])
 		nfcats);
 
 	if (nfcats == 0)
-	    G_fatal_error(_("No categories for 'from' for slected type and layer"));
+	    G_fatal_error(_("No categories for 'from' for selected type and layer"));
 
 	/* Sort by cats and remove duplicates */
 	qsort((void *)Near, nfcats, sizeof(NEAR), cmp_near);

vector/v.distance/v.distance.html

@@ -172,7 +172,7 @@ g.remove -f type=vector name=vdistance_vectors_raw
 v.db.addtable map=vdistance_vectors column="length DOUBLE"
 v.to.db map=vdistance_vectors option=length column=length
 
-# calculcate statistics. Use v.univar.sh for extended statistics.
+# calculate statistics
 v.univar vdistance_vectors column=length
 </pre></div>