Add missing description for focus_on_window_activation command in docs.
@@ -536,6 +536,13 @@ The default colors are:
set to _always_, the window under the cursor will always be focused, even
after switching between workspaces.
+*focus_on_window_activation* smart|urgent|focus|none
+ This option determines what to do when an xwayland client requests
+ window activation. If set to _urgent_, the urgent state will be set
+ for that window. If set to _focus_, the window will become focused.
+ If set to _smart_, the window will become focused only if it is already
+ visible, otherwise the urgent state will be set. Default is _smart_.
+
*focus_wrapping* yes|no|force
This option determines what to do when attempting to focus over the edge
of a container. If set to _no_, the focused container will retain focus,
