common.xml: specify enumeration for MAV_CMD_NAV_VTOL_LAND.param1

Author: peterbarker

message_definitions/v1.0/common.xml

@@ -923,7 +923,7 @@
       </entry>
       <entry value="85" name="MAV_CMD_NAV_VTOL_LAND" hasLocation="true" isDestination="true">
         <description>Land using VTOL mode</description>
-        <param index="1">See NAV_VTOL_LAND_OPTIONS enum</param>
+        <param index="1" label="Land Options" enum="NAV_VTOL_LAND_OPTIONS">Landing behaviour.</param>
         <param index="2">Empty</param>
         <param index="3" label="Approach Altitude" units="m">Approach altitude (with the same reference as the Altitude field). NaN if unspecified.</param>
         <param index="4" label="Yaw" units="deg">Yaw angle. NaN to use the current system yaw heading mode (e.g. yaw towards next waypoint, yaw to home, etc.).</param>