Various formatting & grammar fixes in asyncio* docs.
diff --git a/Doc/library/asyncio.rst b/Doc/library/asyncio.rst
index e6ea89b..23731b1 100644
--- a/Doc/library/asyncio.rst
+++ b/Doc/library/asyncio.rst
@@ -30,7 +30,7 @@
* coroutines and tasks based on ``yield from`` (:PEP:`380`), to help write
concurrent code in a sequential fashion;
-* cancellation support for Futures and coroutines;
+* cancellation support for :class:`Future`\s and coroutines;
* :ref:`synchronization primitives <asyncio-sync>` for use between coroutines in
a single thread, mimicking those in the :mod:`threading` module;