doc: add note about ~ not being expanded

Author: tesselslate

doc/00_setup.md

@@ -53,18 +53,17 @@ compiled earlier.
 Secondly, you will need to use the patched version of GLFW. This differs based
 on whether you are on PrismLauncher or MultiMC.
 
-> [!IMPORTANT]
-> Make sure you configure the instance to use patched GLFW correctly! If the
-> instance still uses the default version of GLFW, waywall will not do anything
-> when the game launches, since the game will still be running under Xwayland.
-
 ### Prism Launcher
 
 You can configure your instance to use the patched version of GLFW by opening
 its settings (with the `Edit` button on the right pane) and going to `Settings`
 -> `Workarounds`. Then, enable `Native libraries` and `Use system installation
 of GLFW`. Finally, enter the path to the patched `libglfw.so` you just compiled.
 
+> [!IMPORTANT]
+> Prism Launcher **will not expand** `~`. If your patched GLFW is within your
+> home directory, you need to type out the absolute path.
+
 ![The Prism Launcher menu for enabling patched GLFW](assets/prism-glfw.png)
 
 ### MultiMC
@@ -76,6 +75,10 @@ GLFW` is **disabled**. Finally, return to the `Java` tab and add
 `-Dorg.lwjgl.glfw.libname=PATH` to your Java arguments, replacing `PATH` with
 the path to the patched `libglfw.so` you just compiled.
 
+> [!IMPORTANT]
+> MultiMC **will not expand** `~`. If your patched GLFW is within your home
+> directory, you need to type out the absolute path.
+
 ## Configuration
 
 waywall follows the [XDG Base Directory] specification and will search for a