Add slides to notes of September WG (#1392)

benjie · web-flow · commit 7a211c629b88 · 2023-09-08T15:08:16.000+01:00
diff --git a/notes/2023/2023-09.md b/notes/2023/2023-09.md
@@ -74,6 +74,7 @@ Agenda:
 
 ### Relay Error Handling
 
+- _[Slides](https://docs.google.com/presentation/d/1rfWeBcyJkiNqyxPxUIKxgbExmfdjA70t)_
 - Itamar:
   - Why?
     - Graphql responses with errors are just discarded and it’s not possible to
