chore: rename config to config.jsonc

Only changes the name of the default config we install and does not
affect the lookup logic in any way.

Man pages were already fixed in #2744

man/waybar.5.scd.in

@@ -16,7 +16,7 @@ Valid locations for this file are:
 - */etc/xdg/waybar/*
 - *@sysconfdir@/xdg/waybar/*
 
-A good starting point is the default configuration found at https://github.com/Alexays/Waybar/blob/master/resources/config
+A good starting point is the default configuration found at https://github.com/Alexays/Waybar/blob/master/resources/config.jsonc
 Also, a minimal example configuration can be found at the bottom of this man page.
 
 # BAR CONFIGURATION

meson.build

@@ -518,8 +518,8 @@ executable(
 )
 
 install_data(
-    './resources/config',
+    'resources/config.jsonc',
-    './resources/style.css',
+    'resources/style.css',
     install_dir: sysconfdir / 'xdg/waybar'
 )