Update content/ember-released-5-4.md

Co-authored-by: Katie Gengler <[email protected]>

Author: jaredgalanis

content/ember-released-5-4.md

@@ -36,7 +36,7 @@ Ember.js 5.4 introduced 1 feature:
 
 - [#20521](https://github.com/emberjs/ember.js/pull/20521) Add TypeScript support for looking up controllers in dependency injection registry
 
-#### Deprecations
+#### Bug fixes
 
 Ember.js 5.4 introduced 2 bug fixes.