Link APIv3

Author: humitos

docs/api/index.rst

@@ -12,15 +12,10 @@ from Read the Docs.
     will be automatically redirected to HTTPS
     and non-GET/HEAD requests over insecure HTTP will fail.
 
-.. tip::
-
-    It is a good idea to put your email address, application name,
-    or Read the Docs username into the user agent header of your requests.
-    That way the Read the Docs' team can contact you in the event of issues.
-
 
 .. toctree::
     :maxdepth: 3
 
+    v3
     v2
     v1