[feat] Change partial match

기선님 과제2: 이름 부분 검색을 지원하도록 변경

src/main/java/org/springframework/samples/petclinic/owner/OwnerRepository.java

@@ -61,7 +61,7 @@ public interface OwnerRepository extends Repository<Owner, Integer> {
 	 */
 	void save(Owner owner);
 
-    @Query("SELECT DISTINCT owner FROM Owner owner left join fetch owner.pets WHERE owner.firstName LIKE :firstName%")
+    @Query("SELECT DISTINCT owner FROM Owner owner left join fetch owner.pets WHERE owner.firstName LIKE %:firstName%")
     @Transactional(readOnly = true)
     Collection<Owner> findByFirstName(String firstName);
 }