bpo-33641: Convert RFC references into links. (GH-7103)
85% of them are already links.
diff --git a/Doc/howto/urllib2.rst b/Doc/howto/urllib2.rst
index ef1791c..046a88a 100644
--- a/Doc/howto/urllib2.rst
+++ b/Doc/howto/urllib2.rst
@@ -239,7 +239,7 @@
urlopen will raise an :exc:`HTTPError`. Typical errors include '404' (page not
found), '403' (request forbidden), and '401' (authentication required).
-See section 10 of RFC 2616 for a reference on all the HTTP error codes.
+See section 10 of :rfc:`2616` for a reference on all the HTTP error codes.
The :exc:`HTTPError` instance raised will have an integer 'code' attribute, which
corresponds to the error sent by the server.
@@ -252,7 +252,7 @@
codes in the 400--599 range.
:attr:`http.server.BaseHTTPRequestHandler.responses` is a useful dictionary of
-response codes in that shows all the response codes used by RFC 2616. The
+response codes in that shows all the response codes used by :rfc:`2616`. The
dictionary is reproduced here for convenience ::
# Table mapping response codes to messages; entries have the