SF 810242. Fix doubled word errors.
diff --git a/Doc/lib/libregex.tex b/Doc/lib/libregex.tex
index 291e96f..bd86db5 100644
--- a/Doc/lib/libregex.tex
+++ b/Doc/lib/libregex.tex
@@ -315,7 +315,7 @@
result is a tuple with one item per argument. If the \var{index} is
zero, the corresponding return value is the entire matching string; if
it is in the inclusive range [1..99], it is the string matching the
-the corresponding parenthesized group (using the default syntax,
+corresponding parenthesized group (using the default syntax,
groups are parenthesized using \code{{\e}(} and \code{{\e})}). If no
such group exists, the corresponding result is \code{None}.