better option description

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@49837 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.rectify/main.c

@@ -78,6 +78,7 @@ int main(int argc, char *argv[])
 
     pfile = G_define_standard_option(G_OPT_F_INPUT);
     pfile->key = "points";
+    pfile->description = _("Name to input file with control points");
     pfile->required = NO;
 
     val = G_define_option();