Merge branch 'kerrizor-master-patch-94701' into 'master'

Fix link to documentation

See merge request gitlab-org/gitlab!48958

app/models/concerns/reactive_caching.rb

 # frozen_string_literal: true
 
 # The usage of the ReactiveCaching module is documented here:
-# https://docs.gitlab.com/ee/development/reactive_caching.md
+# https://docs.gitlab.com/ee/development/reactive_caching.html
+#
 module ReactiveCaching
   extend ActiveSupport::Concern