Merge pull request #33224 from mikepmunroe/mm-no-touching-api-update

Add example for no_touching? for api docs [ci skip]

activerecord/lib/active_record/no_touching.rb

@@ -43,6 +43,13 @@ module ActiveRecord
         end
     end
 
+    # Returns +true+ if the class has +no_touching+ set, +false+ otherwise.
+    #
+    #   Project.no_touching do
+    #     Project.first.no_touching? # true
+    #     Message.first.no_touching? # false
+    #   end
+    #
     def no_touching?
       NoTouching.applied_to?(self.class)
     end