/usr/share/doc/libghc-stm-chans-prof/README is in libghc-stm-chans-prof 3.0.0.4-3build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libghc-stm-chans-prof/../libghc-stm-chans-dev/README