[Makefile] [Linter] Correct (another) regex bug
[Makefile] [Linter] Correct (another) regex bug

...In the same regular expression as previously. Wheee!

Follow-up to commit eb69d927df44c22d8a520c83090d52ad08d9fbda.

CylonicRaider/Instant,CylonicRaider/Instant,CylonicRaider/Instant,CylonicRaider/Instant,CylonicRaider/Instant