/usr/lib/ghc-doc/hoogle/blaze-builder.txt is in libghc-blaze-builder-doc 0.3.3.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-blaze-builder-doc/html/blaze-builder.txt