Fix: Use "ref.relpath" as path to header value
Fix: Use "ref.relpath" as path to header value

The header value for the relative path is at "ref.relpath". This fixes
the wrong selector.

Signed-off-by: Matthias Beyer <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@beyermatthias.de>

matthiasbeyer/imag,matthiasbeyer/imag