Add additional comment from chat (#963)

* Add additional comment from chat

* Update 2022-05-05.md

Author: robrichard

notes/2022/2022-05-05.md

@@ -240,6 +240,7 @@
 - [via chat]
   - Matt Mahoney to Everyone (9:49 PM)
   - I was wrong: we _do not_ de-duplicate, and in fact it’s even worse: we send ALL the chunks for one deferred fragment then ALL the chunks of the second.
+  - So we have the same bug, but because the last element in our path is the index, we can de-duplicate client side
 - Rob: so in summary, are we leaning towards option A but updating the language to "indicates starting position, overwrites length of array"
 - ACTION - Rob: ensure the spec wording is accurate.