v.segments: fix https://trac.osgeo.org/grass/changeset/63137, standardized options (https://trac.osgeo.org/grass/ticket/2409)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@63139 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.segment/main.c

@@ -70,7 +70,7 @@ int main(int argc, char **argv)
     out_opt = G_define_standard_option(G_OPT_V_OUTPUT);
     
     file_opt = G_define_standard_option(G_OPT_F_INPUT);
-    file_opt->key = "segments";
+    file_opt->key = "rules";
     file_opt->required = NO;
     file_opt->label = _("Name of file containing segment rules");
     file_opt->description = _("'-' for standard input");