chore: rename certified moderator (#1825)

* chore: rename certified moderator

* fix: badge name misspelt

Author: JustaSqu1d

docs/api/enums.rst

@@ -303,7 +303,7 @@ of :class:`enum.Enum`.
         The user is an Early Verified Bot Developer.
     .. attribute:: discord_certified_moderator
 
-        The user is a Discord Certified Moderator.
+        The user is a Moderator Programs Alumni.
     .. attribute:: bot_http_interactions
 
         The bot has set an interactions endpoint url.