Fixed Typo In PetClinicIntegrationTests

Author: ProgrammingFire

src/test/java/org/springframework/samples/petclinic/PetclinicIntegrationTests.java renamed to src/test/java/org/springframework/samples/petclinic/PetClinicIntegrationTests.java

@@ -31,7 +31,7 @@
 import org.springframework.web.client.RestTemplate;
 
 @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
-class PetclinicIntegrationTests {
+class PetClinicIntegrationTests {
 
 	@LocalServerPort
 	int port;