Wslg docs (bevyengine#9842)

# Objective

- WSL documentation was out-of-date and potentially misleading. The
release of WSLg makes a lot of stuff easier

## Solution

- Just updating docs for now

## NB
I haven't been able to get a full end-to-end GPU on WSL test going yet,
but plan to update this documentation again once I have more of a grasp
on that

docs/linux_dependencies.md

@@ -21,10 +21,17 @@ Depending on your graphics card, you may have to install one of the following:
 
 Compiling with clang is also possible - replace the `g++` package with `clang`.
 
-### Windows Subsystem for Linux (WSL 2)
+## Windows Subsystem for Linux (WSL 2)
 
-Graphics and audio need to be configured for them to work with WSL 2 backend.
-Please see the ubuntu [WSL documentation](https://wiki.ubuntu.com/WSL) on how to set up graphics and audio.
+Up-to-date WSL Installs for Windows 10 & 11 include WSLg, which provides
+necessary servers for passing graphics and audio between Windows and the WSL instance.
+With WSLg, a user's WSL instance can use X11 as well as Wayland.
+For more information, see WSLg [documentation](https://github.com/microsoft/wslg#wslg-architecture-overview).
+
+Prior to the release of [WSL Gui (WSLg)](https://en.wikipedia.org/wiki/Windows_Subsystem_for_Linux#WSLg)
+around 4/20/2021, users had to [manually set up servers](https://wiki.ubuntu.com/WSL#Advanced_Topics) on windows for graphic and audio.
+Make note of the date for documentation found across the internet.
+Following advice from before WSLg's release can lead to additional conflicts.
 
 ## [Fedora](https://getfedora.org/)