chore: Docs 노출 숨김 처리

Author: ysw789

src/main/java/dmu/dasom/api/domain/common/exception/CustomErrorController.java

@@ -1,5 +1,6 @@
 package dmu.dasom.api.domain.common.exception;
 
+import io.swagger.v3.oas.annotations.Hidden;
 import jakarta.servlet.RequestDispatcher;
 import jakarta.servlet.http.HttpServletRequest;
 import org.springframework.boot.web.servlet.error.ErrorController;
@@ -8,6 +9,7 @@
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+@Hidden
 @RestController
 public class CustomErrorController implements ErrorController {