(Merge 3.4) Close #21010: Fix typo in asyncio doc. Patch written by Claudiu

Popa.

Doc/library/asyncio-protocol.rst

@@ -89,7 +89,7 @@ ReadTransport
    .. method:: pause_reading()
 
       Pause the receiving end of the transport.  No data will be passed to
-      the protocol's :meth:`data_received` method until meth:`resume_reading`
+      the protocol's :meth:`data_received` method until :meth:`resume_reading`
       is called.
 
    .. method:: resume_reading()