Change dest for doxygen (HDFGroup#3856)

doc/branches-explained.md

@@ -2,7 +2,7 @@
 
 This document describes current HDF5 branches. 
 
-Branches are tested nightly and testing results are available at https://cdash-internal.hdfgroup.org/ and https://cdash.hdfgroup.org/. 
+Branches are tested nightly and testing results are available at https://cdash.hdfgroup.org/. 
 Commits that break daily testing should be fixed by 3:00 pm Central time or reverted.  
 We encourage code contributors to check the status of their commits. If you have any questions, please contact [email protected].
 

doxygen/dox/Overview.dox

@@ -23,7 +23,7 @@ documents cover a mix of tasks, concepts, and reference, to help a specific
 \par Versions
      Version-specific documentation (see the version in the title area) can be found
      here:
-     - <a href="https://hdfgroup.github.io/hdf5/index.html">HDF5 <code>develop</code> branch</a>
+     - <a href="https://hdfgroup.github.io/hdf5/develop/index.html">HDF5 <code>develop</code> branch</a>
      - <a href="https://hdfgroup.github.io/hdf5/v1_14/index.html">HDF5 1.14.x (this site)</a>
      - <a href="https://docs.hdfgroup.org/hdf5/v1_12/index.html">HDF5 1.12.x</a>
      - <a href="https://docs.hdfgroup.org/hdf5/v1_10/index.html">HDF5 1.10.x</a>