Enable doctest running for several other documents.
We have now over 640 doctests that are run with "make doctest".
diff --git a/Doc/library/sched.rst b/Doc/library/sched.rst
index 420ae20..3b83f4a 100644
--- a/Doc/library/sched.rst
+++ b/Doc/library/sched.rst
@@ -25,7 +25,7 @@
 Example::
 
    >>> import sched, time
-   >>> s=sched.scheduler(time.time, time.sleep)
+   >>> s = sched.scheduler(time.time, time.sleep)
    >>> def print_time(): print "From print_time", time.time()
    ...
    >>> def print_some_times():