Broken link to Custom filter documentation

The page http://www.hdfgroup.org/HDF5/doc/H5.user/Filters.html is missing . This is linked to from the main API documentation pages:

This page is accessible in the current documentation:

These pages can be found by navigating through the Technical Notes to to “HDF5 Filters”. It cannot be found by searching the Doxygen index. I found this by finding a copy of the inaccessible URL via the Internet Archive Wayback Machine, finding the September 18th, 2015 copy, and then searching for the specific headings I found there on Google. I would like to save others the same trouble.

Thank you for the missing link. I’ll fix it.

Updated: Fixed in PR# 4514