git-submodule.sh: align error reporting for update mode to use path

All other error messages in cmd_update are reporting the submodule based
on its path, so let's do that for invalid update modes, too.

Signed-off-by: Stefan Beller <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: stefanbeller

git-submodule.sh

@@ -627,7 +627,7 @@ cmd_update()
 				must_die_on_failure=yes
 				;;
 			*)
-				die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
+				die "$(eval_gettext "Invalid update mode '$update_module' for submodule path '$path'")"
 			esac
 
 			if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")