repo_groups: fix bad route on check if revoke permissions on yourself.

rhodecode/apps/repo_group/views/repo_group_permissions.py

@@ -74,7 +74,7 b' class RepoGroupPermissionsView(RepoGroup'
                 h.flash(msg, category='warning')
                 raise HTTPFound(
                     h.route_path('edit_repo_group_perms',
-                                 group_name=self.db_repo_group_name))
+                                 repo_group_name=self.db_repo_group_name))
 
         # iterate over all members(if in recursive mode) of this groups and
         # set the permissions !