Update usages of deprecated #textilizable helper

        See https://github.com/opf/openproject/commit/f99450b18112bb6b0e54c03341d84d8cd560c1e2

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Merge pull request #12 from finnlabs/fix/deprecated-textilizable-usages

Update usages of deprecated #textilizable helper