Update _toctree.yml

Author: stevhliu

docs/hub/_toctree.yml

@@ -54,8 +54,11 @@
     title: Gated Models
   - local: models-uploading
     title: Uploading Models
+  - local: model-repo-layout
+    title: Model repository files
   - local: models-downloading
     title: Downloading Models
+  - local: model-repo-layout
   - local: models-libraries
     title: Integrated Libraries
     sections: