r.resamp.filter: add keyword

git-svn-id: https://svn.osgeo.org/grass/grass/branches/releasebranch_7_0@60653 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.resamp.filter/main.c

@@ -383,6 +383,7 @@ int main(int argc, char *argv[])
     module = G_define_module();
     G_add_keyword(_("raster"));
     G_add_keyword(_("resample"));
+    G_add_keyword(_("kernel filter"));
     module->description =
 	_("Resamples raster map layers using an analytic kernel.");