Handbook: improving Chapter 6 Wayland

Hello everyone

I am a new FreeBSD user, and I've been following the handbook.
The quality of the documentation is really good, and it's really easy to
follow.

When I got to chapter 6 (Wayland) I had some troubles initially.
Some of the problems were a bit difficult to troubleshoot, and I had to dig
in the forums to find the fixes (which was tiring, but also fun).

For this reason, I decided that I want to give back to the community and
improve the chapter, adding hints to avoid the same pitfalls I fell into :)
In the following days, I will try to redo everything in a virtual machine
to make sure I don't miss anything that can be useful.

I found in the archives an e-mail instructing on how to contribute, so I read
the FDP and created a fork in Github, and I will be sending a PR when I'm
done.

Initially I thought about listing in this e-mail the various changes that I
intend to make, but the e-mail was becoming really long and I'm not sure if
that would have been useful.
In case, let me know and I will share my ideas.

The sections I expect to modify are:
6.2 Wayland Overview
6.3 The Wayfire Compositor

See you later
aliceitc