Fix capitalization

Author: p

source/release-notes/mongoid-8.0.txt

@@ -760,7 +760,7 @@ Support for the ``:id_sort`` option on the ``#first`` and ``#last`` options has
 been dropped. These methods now only except a limit as a positional argument.
 
 
-Support Dropped for Mongoid::Criteria cache
+Support Dropped for Mongoid::Criteria Cache
 -------------------------------------------
 
 Support for individually caching criteria objects has been dropped in Mongoid 8.