Document xwayland rootston config changes
[core]
-# Disable X11 support. Enabled by default.
+# X11 support
+# - true: enables X11, xwayland is started only when an X11 client connects
+# - immediate: enables X11, xwayland is started immediately
+# - false: disables xwayland
xwayland=false
# Single output configuration. String after colon must match output's name.
