modules/gnome: Add back deprecation message

This looks like it was probably removed in a bad rebase

mesonbuild/modules/gnome.py

@@ -1045,6 +1045,8 @@ class GnomeModule(ExtensionModule):
     def yelp(self, state: 'ModuleState', args: T.Tuple[str, T.List[str]], kwargs: 'Yelp') -> ModuleReturnValue:
         project_id = args[0]
         sources = kwargs['sources']
+        if args[1]:
+            FeatureDeprecated.single_use('gnome.yelp more than one positional argument', '0.60.0', 'use the "sources" keyword argument instead.')
         if not sources:
             sources = args[1]
             if not sources: