add trailing slash to end of URL
<example><title>Rewriting URLs embedded in proxied content</title>
<highlight language="config">
-ProxyPass "/blog/" "http://internal.blog.example.com"
+ProxyPass "/blog/" "http://internal.blog.example.com/"
ProxyPassReverse "/blog/" "http://internal.blog.example.com/"
Substitute "s|http://internal.blog.example.com/|http://www.example.com/blog/|i"
