implemented methods dedicated to user logging in

src/main/java/mate/academy/service/AuthenticationService.java

@@ -15,7 +15,7 @@ public class AuthenticationService {
     public boolean login(String email, String password) {
         UserService userService = new UserService();
         User user = userService.findByEmail(email);
-        if ( user != null) {
+        if (user != null) {
             return (user.getPassword().equals(password)) ? true : false;
         }
         return false;