Fix failing spec on CI environments

spec/customization_engine_spec.rb

@@ -16,15 +16,15 @@ describe 'Customization Engine' do
     reset_load_path_and_reload(default_path)
   end
 
-  it "loads custom and override original locales" do
+  it 'loads custom and override original locales' do
     increase_load_path_and_reload(Dir[Rails.root.join('spec', 'support',
                                                       'locales', 'custom', '*.{rb,yml}')])
     expect(test_key).to eq 'Overriden string with custom locales'
   end
 
-  it "does not override original locales" do
+  it 'does not override original locales' do
     increase_load_path_and_reload(Dir[Rails.root.join('spec', 'support',
-                                                      'locales', '**', '*.{rb,yml}')])
+                                                      'locales', '*.{rb,yml}')])
     expect(test_key).to eq 'Not overriden string with custom locales'
   end