Fix the URL for the regex-to-re HOWTO.
diff --git a/Doc/lib/libregex.tex b/Doc/lib/libregex.tex
index e6fd708..f427a88 100644
--- a/Doc/lib/libregex.tex
+++ b/Doc/lib/libregex.tex
@@ -15,7 +15,7 @@
\code{reconvert}\refstmodindex{reconvert} helps in converting
\code{regex} style regular expressions to \code{re}\refstmodindex{re}
style regular expressions. (For more conversion help, see the URL
-\url{http://starship.skyport.net/crew/amk/regex/regex-to-re.html}.)
+\url{http://starship.skyport.net/crew/amk/howto/regex-to-re.html}.)
By default the patterns are Emacs-style regular expressions
(with one exception). There is
diff --git a/Doc/lib/libregsub.tex b/Doc/lib/libregsub.tex
index 5158d53..08b990e 100644
--- a/Doc/lib/libregsub.tex
+++ b/Doc/lib/libregsub.tex
@@ -16,7 +16,7 @@
\module{reconvert} helps in converting \code{regex} style regular
expressions to \module{re} style regular expressions. (For more
conversion help, see the URL
-\url{http://starship.skyport.net/crew/amk/regex/regex-to-re.html}.)
+\url{http://starship.skyport.net/crew/amk/howto/regex-to-re.html}.)
\setindexsubitem{(in module regsub)}