bpo-33694: Fix typo in helper function name (GH-7522)


_feed_data_to_bufferred_proto() renamed to
_feed_data_to_buffered_proto() ("bufferred" => "buffered").

Typo spotted by Nathaniel J. Smith.
(cherry picked from commit ff6c07729211fb98431a2793e074d07a21e0650a)

Co-authored-by: Victor Stinner <vstinner@redhat.com>
diff --git a/Lib/asyncio/protocols.py b/Lib/asyncio/protocols.py
index 4d47da3..a35ea82 100644
--- a/Lib/asyncio/protocols.py
+++ b/Lib/asyncio/protocols.py
@@ -191,7 +191,7 @@
         """Called when subprocess has exited."""
 
 
-def _feed_data_to_bufferred_proto(proto, data):
+def _feed_data_to_buffered_proto(proto, data):
     data_len = len(data)
     while data_len:
         buf = proto.get_buffer(data_len)