Merge pull request #1999 from bf4/typos

Fix typos [ci skip]

test/action_controller/json_api/errors_test.rb

@@ -14,10 +14,10 @@ module ActionController
               { source: { pointer: '/data/attributes/id' }, detail: 'must be a uuid' }
             ]
           }.to_json
-          assert_equal json_reponse_body.to_json, expected_errors_object
+          assert_equal json_response_body.to_json, expected_errors_object
         end
 
-        def json_reponse_body
+        def json_response_body
           JSON.load(@response.body)
         end
 

test/action_controller/serialization_test.rb

@@ -456,7 +456,7 @@ module ActionController
         end
       end
 
-      def test_render_event_is_emmited
+      def test_render_event_is_emitted
         subscriber = ::ActiveSupport::Notifications.subscribe('render.active_model_serializers') do |name|
           @name = name
         end

test/active_model_serializers/json_pointer_test.rb

@@ -13,7 +13,7 @@ module ActiveModelSerializers
       assert_equal '/data', pointer
     end
 
-    def test_unkown_data_pointer
+    def test_unknown_data_pointer
       assert_raises(TypeError) do
         ActiveModelSerializers::JsonPointer.new(:unknown)
       end