asyncio: document the new asyncio.subprocess module
diff --git a/Doc/library/asyncio-stream.rst b/Doc/library/asyncio-stream.rst
index 52da4e0..9d18baf 100644
--- a/Doc/library/asyncio-stream.rst
+++ b/Doc/library/asyncio-stream.rst
@@ -9,7 +9,7 @@
Stream functions
================
-.. function:: open_connection(host=None, port=None, *, loop=None, limit=_DEFAULT_LIMIT, **kwds)
+.. function:: open_connection(host=None, port=None, \*, loop=None, limit=None, **kwds)
A wrapper for :meth:`~BaseEventLoop.create_connection()` returning a (reader,
writer) pair.
@@ -32,7 +32,7 @@
This function returns a :ref:`coroutine object <coroutine>`.
-.. function:: start_server(client_connected_cb, host=None, port=None, *, loop=None, limit=_DEFAULT_LIMIT, **kwds)
+.. function:: start_server(client_connected_cb, host=None, port=None, \*, loop=None, limit=None, **kwds)
Start a socket server, call back for each client connected.
@@ -62,7 +62,7 @@
StreamReader
============
-.. class:: StreamReader(limit=_DEFAULT_LIMIT, loop=None)
+.. class:: StreamReader(limit=None, loop=None)
.. method:: exception()