Note wayland incompatibility for resolution detection

[o0nd7ots]

Description

I was running into trouble because Neofetch showed 16:9 resolution while I was working on another one.
I have found the #2371 issue and there someone wrote that Neofetch does not support connecting to Wayland display server.
I think that it should be noted somewhere within the readme file.

• Does this issue still occur in the master branch? (Required if issue)

Neofetch version

7.1.0

[CarterLi]

You may try this pr: #2395