FAQ/LinuxApp: Fix heading levels for art programs

Author: gonX

site/_wiki/FAQ/LinuxAppSpecific.md

@@ -26,7 +26,7 @@ env SDL_VIDEODRIVER=wayland osu-lazer
 
 ---
 
-### Art Programs {#art}
+## Art Programs {#art}
 
 Firstly, make sure your output mode is [set to Artist Mode]({% link _wiki/FAQ/Linux.md %}#artist-mode %})
 
@@ -39,7 +39,7 @@ libinput list-devices | grep -i OpenTabletDriver
 
 If your program still does not work after ensuring the output mode has been set in the driver, please read on.
 
-#### GIMP {#gimp}
+### GIMP {#gimp}
 
 1. Go to 'Edit -> Input Devices' in the GIMP Toolbar
 2. Make sure any of the devices matching the following settings are set to 'Mode: Screen' in the right hand panel