/usr/share/doc/haskell-hsql-postgresql-doc/html/ is in libghc-hsql-postgresql-doc 1.8.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/haskell-hsql-postgresql-doc/html/DB-HSQL-PG-Core.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/DB-HSQL-PG-Functions.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/DB-HSQL-PG-Sql.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/DB-HSQL-PG-Status.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/DB-HSQL-PG-Type.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/Database-HSQL-PostgreSQL.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/doc-index.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/frames.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/haddock-util.js
/usr/share/doc/haskell-hsql-postgresql-doc/html/hslogo-16.png
/usr/share/doc/haskell-hsql-postgresql-doc/html/index-frames.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/index.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/mini_DB-HSQL-PG-Core.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/mini_DB-HSQL-PG-Functions.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/mini_DB-HSQL-PG-Sql.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/mini_DB-HSQL-PG-Status.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/mini_DB-HSQL-PG-Type.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/mini_Database-HSQL-PostgreSQL.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/minus.gif
/usr/share/doc/haskell-hsql-postgresql-doc/html/ocean.css
/usr/share/doc/haskell-hsql-postgresql-doc/html/plus.gif
/usr/share/doc/haskell-hsql-postgresql-doc/html/src/
/usr/share/doc/haskell-hsql-postgresql-doc/html/src/DB-HSQL-PG-Core.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/src/DB-HSQL-PG-Functions.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/src/DB-HSQL-PG-Sql.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/src/DB-HSQL-PG-Status.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/src/DB-HSQL-PG-Type.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/src/Database-HSQL-PostgreSQL.html
/usr/share/doc/haskell-hsql-postgresql-doc/html/src/hscolour.css
/usr/share/doc/haskell-hsql-postgresql-doc/html/synopsis.png