Update sample/07-sequelize/src/users/users.controller.spec.ts

Co-authored-by: Kamil Mysliwiec <mail@kamilmysliwiec.com>

Author: Tony133

sample/07-sequelize/src/users/users.controller.spec.ts

@@ -56,7 +56,7 @@ describe('UsersController', () => {
   });
 
   describe('create()', () => {
-    it('should create an user', () => {
+    it('should create a user', () => {
       expect(usersController.create(createUserDto)).resolves.toEqual({
         id: '1',
         ...createUserDto,