Update WaybarCava.sh

Fix shebang line to prevent posix execution of shell script. In posix mode, the for-loop failed.

config/hypr/scripts/WaybarCava.sh

@@ -1,4 +1,4 @@
-# #! /bin/bash
+#!/bin/bash
 ## /* ---- 💫 https://github.com/JaKooLit 💫 ---- */  ##
 
 # Not my own work. This was added through Github PR. Credit to original author