Update changelog

Author: Taaku18

CHANGELOG.md

@@ -9,7 +9,8 @@ however, insignificant breaking changes do not guarantee a major version bump, s
 # [UNRELEASED]
 
 ### Fixed
-- `?alias make/create` as aliases to `?alias add`. This improves continuity between the bot and its command structure.
+- `?alias make/create` as aliases to `?alias add`. This improves continuity between the bot and its command structure. ([PR #3195](https://github.com/kyb3r/modmail/pull/3195))
+- Loading the blocked list with the `?blocked` command takes a long time when the list is large. ([PR #3242](https://github.com/kyb3r/modmail/pull/3242))
 
 # v4.0.2