Better changelog naming and coding style

- Changelog should have a human readable title, not MR title

- Add a blank line before the if block

app/models/concerns/reactive_caching.rb

@@ -130,6 +130,7 @@ module ReactiveCaching
     def exclusively_update_reactive_cache!(*args)
       locking_reactive_cache(*args) do
         key = full_reactive_cache_key(*args)
+
         if within_reactive_cache_lifetime?(*args)
           enqueuing_update(*args) do
             new_value = calculate_reactive_cache(*args)

changelogs/unreleased/reactive-caching-self-cleanup.yml → changelogs/unreleased/remove-reactive-caching-redis-keys-after-use.yml

 ---
-title: reactive-caching-self-cleanup
+title: remove-reactive-caching-redis-keys-after-use
 merge_request: 20111
 author:
 type: performance