lint pass 2 (#8878)

* Code quality pass

* Typofix

* Update applications_controller_spec.rb

* Update applications_controller_spec.rb

config/initializers/omniauth.rb

@@ -3,7 +3,7 @@ Rails.application.config.middleware.use OmniAuth::Builder do
 end
 
 Devise.setup do |config|
-  # Devise omniauth strategies
+  # Devise omniauth strategies
   options = {}
   options[:redirect_at_sign_in] = ENV['OAUTH_REDIRECT_AT_SIGN_IN'] == 'true'