Apply suggestion from @Copilot

Co-authored-by: Copilot <[email protected]>

Author: marcoscaceres

codec_registry.src.html

@@ -57,7 +57,7 @@
 evaluation. For the entry to be included, there needs
 to be interest from at least one implementer in the Working Group. If the Working Group 
 reaches consensus to accept the candidate entry, send a pull request (either by editors
-or by the part requesting the candidate registration) that meets the following requirements:
+or by the party requesting the candidate registration) that meets the following requirements:
 
 1. A unique <a>codec string</a>, a common name string, and a
     link to the codec's public <dfn>registration specification</dfn>.