docs: update changelog to be consistent (Pycord-Development#2583)

Author: JustaSqu1d

CHANGELOG.md

@@ -25,7 +25,7 @@ These changes are available on the `master` branch, but have not yet been releas
 
 ### Fixed
 
-- Fix `Enum` options not setting the correct type when only one choice is available.
+- Fixed `Enum` options not setting the correct type when only one choice is available.
   ([#2577](https://github.com/Pycord-Development/pycord/pull/2577))
 
 ### Changed