New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/25569#discussion_r528317600

Comment:
this could be a good time to add a changelog:
```
changelog="https://support.hdfgroup.org/ftp/HDF5/releases/hdf5-${version%.*}/hdf5-${version}/src/hdf5-${version}-RELEASE.txt"
```