Update changelog

CHANGELOG.md

@@ -17,6 +17,7 @@
 - Added ```/api/v1/custom_emojis``` endpoint [6e43431a](https://github.com/pixelfed/pixelfed/commit/6e43431a)
 - Added ```/api/v1/domain_blocks``` endpoint [83a6313f](https://github.com/pixelfed/pixelfed/commit/83a6313f)
 - Added ```/api/v1/endorsements``` endpoint [1f16221e](https://github.com/pixelfed/pixelfed/commit/1f16221e)
+- Added ```/api/v1/favourites``` endpoint [b9cc06da](https://github.com/pixelfed/pixelfed/commit/b9cc06da)
 
 ### Fixed
 - Update developer settings pages, fix vue bug [cd365ab3](https://github.com/pixelfed/pixelfed/commit/cd365ab3)