Fix new offenses

lib/api/v3/notes.rb

@@ -5,7 +5,7 @@ module API
 
       before { authenticate! }
 
-      NOTEABLE_TYPES = [Issue, MergeRequest, Snippet]
+      NOTEABLE_TYPES = [Issue, MergeRequest, Snippet].freeze
 
       params do
         requires :id, type: String, desc: 'The ID of a project'
@@ -86,7 +86,7 @@ module API
               note = ::Notes::CreateService.new(user_project, current_user, opts).execute
 
               if note.valid?
-                present note, with: ::API::V3::Entities::const_get(note.class.name)
+                present note, with: ::API::V3::Entities.const_get(note.class.name)
               else
                 not_found!("Note #{note.errors.messages}")
               end