The patch from https://phabricator.haskell.org/D4865 introduces

    go _ (HsParTy _ (dL->L l (HsStarTy _ isUni))) acc ann fix
      = do { warnStarBndr l
           ; let name = mkOccName tcClsName (if isUni then "★" else "*")
           ; return (cL l (Unqual name), acc, fix, ann) }

which discards the parens annotations belonging to the HsParTy.

Updates haddock submodule

Closes #16265

(cherry picked from commit 5e9888bd)