Revert "fix README for main branch"

This reverts commit 3a72cd924c.

There is probably an easier way to keep this difference, but hey, this
works for me.

README.md

@@ -37,7 +37,7 @@ Feature *non-goals* include:
 
 ## Building dwl
 
-dwl has only two dependencies: wlroots 0.13 and wayland-protocols. Simply install these and run `make`.  If you wish to build against a Git version of wlroots, check out the [wlroots-next branch](https://github.com/djpohly/dwl/tree/wlroots-next).
+dwl has only two dependencies: wlroots-git and wayland-protocols. Simply install these and run `make`.
 
 To enable XWayland, you should also install xorg-xwayland and uncomment its flag in `config.mk`.