Fix missing and incorrect links in CHANGELOG.md

Author: mokagio

CHANGELOG.md

@@ -48,13 +48,13 @@ _None._
 
 _None._
 
-## [5.2.0](https://github.com/wordpress-mobile/WordPressAuthenticator-iOS/releases/tag/5.0.0)
+## [5.2.0](https://github.com/wordpress-mobile/WordPressAuthenticator-iOS/releases/tag/5.2.0)
 
 ### Internal Changes
 
 - Change minimum version of WordPressKit to 6.0.
 
-## [5.1.0]
+## [5.1.0](https://github.com/wordpress-mobile/WordPressAuthenticator-iOS/releases/tag/5.1.0)
 
 ### New Features