Fix a link in CHANGELOG.md (#575)

CHANGELOG.md

@@ -5,7 +5,7 @@
 - [FEATURE] The query parameter that RMP uses (by default, pp) is now configurable [#553](https://github.com/MiniProfiler/rack-mini-profiler/pull/553)
 - [FEATURE] You can now opt-out of the Net::HTTP patch by using RACK_MINI_PROFILER_PATCH_NET_HTTP="false"
 - [FIX] Error responses now include header values from the app, and stackprof not installed message now has correct content [#547](https://github.com/MiniProfiler/rack-mini-profiler/pull/547)
-- [FIX] RMP pages now have more valid HTML, with title elements [#562](https://github.com/MiniProfiler/rack-mini-profiler/pull/562)
+- [FIX] RMP pages now have more valid HTML, with title elements [#552](https://github.com/MiniProfiler/rack-mini-profiler/pull/552)
 - [BREAKING CHANGE] Ruby 2.4 and Ruby 2.5 are no longer supported.
 - [FIX] Now works with apps that don't otherwise require erb [#531](https://github.com/MiniProfiler/rack-mini-profiler/pull/531)
 - [DOCS] Added Heroku Redis instructions