v.buffer: add more keywords

git-svn-id: https://svn.osgeo.org/grass/grass/branches/releasebranch_7_0@67615 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.buffer/main.c

@@ -1,4 +1,3 @@
-
 /****************************************************************
  *
  * MODULE:       v.buffer
@@ -225,6 +224,8 @@ int main(int argc, char *argv[])
     G_add_keyword(_("circle"));
     G_add_keyword(_("geometry"));
     G_add_keyword(_("line"));
+    G_add_keyword(_("grow"));
+    G_add_keyword(_("shrink"));
     module->description =
 	_("Creates a buffer around vector features of given type.");
 

vector/v.buffer/v.buffer.html

@@ -9,7 +9,7 @@ segments are generated).
 <h2>NOTES</h2>
 
 Internal buffers for areas can be generated with negative distance 
-values ("inward buffer" or "negative buffer").
+values ("inward buffer" or "negative buffer" or "shrinking").
 <p>
 <em>v.buffer</em> fusions the geometries of buffers by default.
 Categories and attribute table will not be transferred (this would