fix (kinda) : refactored update of data, still trying to fix bug

from EntrepreneurApiServiceTests (code is a bit messy with prints and comments dw)

MyINPulse-back/src/main/java/enseirb/myinpulse/repository/UserRepository.java

@@ -9,7 +9,7 @@ import java.util.Optional;
 
 @RepositoryRestResource
 public interface UserRepository extends JpaRepository<User, Long> {
-    Optional<User> findByPrimaryMail(String email);
+    Optional<User> findByPrimaryMail(String primaryMail);
 
     /* @Query("SELECT u from User u")
     User findAllUser(); */