Change single quotes to double quotes

spec/controllers/management/sessions_controller_spec.rb

@@ -1,8 +1,8 @@
-require 'rails_helper'
+require "rails_helper"
 
 describe Management::SessionsController do
 
-  describe 'Sign in' do
+  describe "Sign in" do
     it "denies access if wrong manager credentials" do
       allow_any_instance_of(ManagerAuthenticator).to receive(:auth).and_return(false)
       expect { get :create, login: "nonexistent", clave_usuario: "wrong"}.to raise_error CanCan::AccessDenied
@@ -41,7 +41,7 @@ describe Management::SessionsController do
     end
   end
 
-  describe 'Sign out' do
+  describe "Sign out" do
     it "destroys the session data and redirect" do
       session[:manager] = {user_key: "31415926", date: "20151031135905", login: "JJB033"}
       session[:document_type] = "1"