www/angie-module-lua: Unbreak build after update

The module was updated but files/patch-lua-config still pointed
to the old working directory.

PR: 297198
Reported by: Sebastian Oswald <sko@rostwald.de> (maintainer)
Approved by: osa, vvd (Mentors, implicit)
MFH: 2026Q3

(cherry picked from commit 565dc2c4047d886d51024ec852352e26a7bb7c5a)