add triple backticks

Author: isabelizimm

vetiver/server.py

@@ -46,15 +46,15 @@ class VetiverAPI:
 
     Notes
     -----
-    This generates an API with either 2 or 3 GET endpoints and 1 POST endpoint.
+    This generates an API with either 3 or 4 GET endpoints and 1 POST endpoint.
 
+    ```
     ├──/ping (GET)
-
     ├──/metadata (GET)
-
+    ├──/prototype (GET)
     ├──/pin-url (GET, if VetiverModel metadata `url` field is not None)
-
     └──/predict (POST)
+    ```
 
     Parameter `check_ptype` was changed to `check_prototype`. Handling of `check_ptype`
     will be removed in a future version.