update reference uri
git-svn-id: https://svn.apache.org/repos/asf/httpd/docs-build/trunk@766675 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/build.xml b/build.xml
index 9c00f36..afaa9fc 100644
--- a/build.xml
+++ b/build.xml
@@ -546,7 +546,7 @@
<!-- (1) You must have the hhc.exe compiler in your PATH. It is part of -->
<!-- the HTML Help Workshop which is freely available and can be -->
<!-- downloaded from -->
-<!-- http://msdn.microsoft.com/library/en-us/htmlhelp/html/hwMicrosoftHTMLHelpDownloads.asp -->
+<!-- http://msdn.microsoft.com/library/default.asp?url=/library/en-us/htmlhelp/html/hwMicrosoftHTMLHelpDownloads.asp -->
<!-- -->
<!-- (2) Before you run `build chm-$lang` you MUST switch to the -->
<!-- appropriate locale. Otherwise the output of hhc.exe will -->
