Clean up whitespace.

pep-3108.txt

@@ -543,7 +543,7 @@ for what the module is meant for.
   + Documentation specifies that the "module should never be used
     directly in new code".
   + Available externally from PyPI_.
-  
+
 * Canvas
 
   + Marked as obsolete in a comment by Guido since 2000
@@ -970,7 +970,7 @@ Modules that were originally suggested for removal
 
   + Useful as a basis for overriding.
   + Used internally.
-  
+
 * sched
 
   + Useful for simulations.
@@ -1071,7 +1071,7 @@ References
 
 .. [#ast-removal] python-dev email: getting compiler package failures
     (http://mail.python.org/pipermail/python-3000/2007-May/007615.html)
-    
+
 
 .. _PyPI: http://pypi.python.org/