Fix app generator tests

Change assert to not match with kredis gem.

Author: ceritium

railties/test/generators/api_app_generator_test.rb

@@ -65,7 +65,7 @@ def test_generator_if_skip_action_cable_is_given
     assert_no_file "config/cable.yml"
     assert_no_file "app/channels"
     assert_file "Gemfile" do |content|
-      assert_no_match(/redis/, content)
+      assert_no_match(/"redis"/, content)
     end
   end
 

railties/test/generators/shared_generator_tests.rb

@@ -288,7 +288,7 @@ def test_generator_if_skip_action_cable_is_given
     assert_no_directory "#{application_path}/app/javascript/channels"
     assert_no_directory "#{application_path}/app/channels"
     assert_file "Gemfile" do |content|
-      assert_no_match(/redis/, content)
+      assert_no_match(/"redis"/, content)
     end
   end