Use a note instead of a tip

Author: javiereguiluz

http_client.rst

@@ -334,7 +334,7 @@ autoconfigure the HTTP client based on the requested URL:
 You can define several scopes, so that each set of options is added only if a
 requested URL matches one of the regular expressions set by the ``scope`` option.
 
-.. tip::
+.. note::
 
     The options passed to the ``request()`` method are merged with the default
     options defined in the scoped client. The options passed to ``request()``