Fix the nav bar

Author: Xavier-xuan

team_project/Documentation/docfx.json

@@ -28,6 +28,7 @@
     "build": {
         "template": ["default"],
         "exportApiNamespaceToc": true,
+        "_appStyle": "#navbar { display: none !important; }",
         "globalMetadata": {
             "_appTitle": "SUSTech Racing Car Documentation",
             "_appFooter": "Generated by DocFX"