docs(user-guide): fix tips file ref

Author: alukach

mkdocs.yml

@@ -33,7 +33,7 @@ nav:
   - Configuration: configuration.md
   - User Guide:
       - Route-Level Auth: user-guide/route-level-auth.md
-      - Tips: tips.md
+      - Tips: user-guide/tips.md
   - Architecture:
       - Middleware Stack: architecture/middleware-stack.md
       - Data Filtering: architecture/data-filtering.md