Fix a bunch of typos in documentation, docstrings and comments.
(From SF patch #810751)
diff --git a/Doc/lib/libregex.tex b/Doc/lib/libregex.tex
index bd86db5..93c389a 100644
--- a/Doc/lib/libregex.tex
+++ b/Doc/lib/libregex.tex
@@ -247,7 +247,7 @@
\code{match()} and \code{search()}. (Already compiled expression
objects are not affected.) The argument is an integer which is the
OR of several flag bits. The return value is the previous value of
- the syntax flags. Names for the flags are defined in the standard
+ the syntax flags. Names for the flags are defined in the standard
module \code{regex_syntax}\refstmodindex{regex_syntax}; read the
file \file{regex_syntax.py} for more information.
\end{funcdesc}