Merge branch 'lucyfox-master-patch-78354' into 'master'

fix typo and change CE to FOSS

See merge request gitlab-org/gitlab!31810

app/models/epic.rb

 # frozen_string_literal: true
 
 # Placeholder class for model that is implemented in EE
-# It reserves '&' as a reference prefix, but the table does not exists in CE
+# It reserves '&' as a reference prefix, but the table does not exist in FOSS
 class Epic < ApplicationRecord
   include IgnorableColumns