Update ArticleCategoryController: add internal prefix to URI

long-article-recommend-service/src/main/java/com/tzld/longarticle/recommend/server/web/recommend/ArticleCategoryController.java

@@ -11,7 +11,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
 @RestController
-@RequestMapping("/articleCategory")
+@RequestMapping("/internal/articleCategory")
 @Slf4j
 public class ArticleCategoryController {