r.shaded.relief: use standardized options (https://trac.osgeo.org/grass/ticket/2409) - (merge https://trac.osgeo.org/grass/changeset/63051 from trunk)

git-svn-id: https://svn.osgeo.org/grass/grass/branches/releasebranch_7_0@63052 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.shaded.relief/main.c

@@ -134,7 +134,7 @@ int main(int argc, char *argv[])
     parm.azimuth->guisection = _("Sun position");
 
     parm.zmult = G_define_option();
-    parm.zmult->key = "zmult";
+    parm.zmult->key = "zmultiplier";
     parm.zmult->type = TYPE_DOUBLE;
     parm.zmult->required = NO;
     parm.zmult->answer = "1";