Added reference for event types to swaymsg manpage
@@ -107,6 +107,8 @@ _swaymsg_ [options...] [message]
Subscribe to a list of event types. The argument for this type should be
provided in the form of a valid JSON array. If any of the types are invalid
or if a valid JSON array is not provided, this will result in a failure.
+ For a list of valid event types and the data returned with them refer to
+ *sway-ipc*(7).
# RETURN CODES
