[PM-9891] [PM-8794] Update "auto-fill" to "autofill" (#385)

* Update instances of "auto-fill" to "autofill".

* Add "auto-fill" and "auto-filled" to forbidden cspell word list.

* Add missing "the" to fix grammar.

Update docs/architecture/deep-dives/event-logs/index.md

Co-authored-by: Matt Bishop <[email protected]>

---------

Co-authored-by: Daniel James Smith <[email protected]>
Co-authored-by: Matt Bishop <[email protected]>

Author: 3 people

custom-words.txt

@@ -71,3 +71,7 @@ Yellowpages
 Yubico
 YubiKey
 YubiKeys
+
+# Forbidden words
+!auto-fill
+!auto-filled