asyncio doc: reformat create_server() doc

Fix also the reate_unix_connection() doc: the method is not support on Windows,
not need to mention that ssl is not support with ProactorEventLoop.
diff --git a/Doc/library/asyncio-eventloops.rst b/Doc/library/asyncio-eventloops.rst
index 282cc4b..b871083 100644
--- a/Doc/library/asyncio-eventloops.rst
+++ b/Doc/library/asyncio-eventloops.rst
@@ -76,7 +76,7 @@
 
 Common limits of Windows event loops:
 
-- :meth:`~BaseEventLoop.create_unix_server` and
+- :meth:`~BaseEventLoop.create_unix_connection` and
   :meth:`~BaseEventLoop.create_unix_server` are not supported: the socket
   family :data:`socket.AF_UNIX` is specific to UNIX
 - :meth:`~BaseEventLoop.add_signal_handler` and