[data/mkinitcpio.conf] old bash array style fix

Please these forum topics for discussions on the syntax

https://forum.manjaro.org/t/mkinitcpio-conf-correct-hooks-and-syntax/152025
https://forum.manjaro.org/t/mkinitcpio-conf-correct-hooks-and-syntax/152025/21

01-fix-mkinitcpio-old-array-style.patch

Edited by Frede H