/usr/lib/ghc-doc/hoogle/libghc-js-flot-doc.txt is in libghc-js-flot-doc 0.8.3-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-js-flot-doc/html/js-flot.txt