응답관리 인코딩 설명 추가

src/main/java/com/eactive/testmaster/api/controller/MockApiController.java

@@ -77,6 +77,10 @@ public class MockApiController {
                         String contentType = responseHeaders.getFirst(HttpHeaders.CONTENT_TYPE);
                         if (!contentType.contains("charset")) {
                             responseHeaders.set(HttpHeaders.CONTENT_TYPE, contentType + "; charset=" + encodingCharset);
+                        } else {
+                            if (!contentType.contains(encodingCharset)) {
+                                logger.warn("Existing content type charset does not match the encodingCharset: " + encodingCharset);
+                            }
                         }
                     }