Fix a bunch of typos in documentation, docstrings and comments.
(From SF patch #810751)
diff --git a/Lib/ihooks.py b/Lib/ihooks.py
index 4034b01..19faac9 100644
--- a/Lib/ihooks.py
+++ b/Lib/ihooks.py
@@ -18,7 +18,7 @@
by standard modules os and os.path. It should be used as the base
class for other hooks classes.
-2) A "module loader" class provides an interface to to search for a
+2) A "module loader" class provides an interface to search for a
module in a search path and to load it. It defines a method which
searches for a module in a single directory; by overriding this method
one can redefine the details of the search. If the directory is None,