added doc for 'ALL' constant for the race details parameter

java/com.sap.sailing.server.gateway/webservices/api/v2/leaderboardGetDoc.html

@@ -24,6 +24,7 @@ The supported race detail constants right now are:<br/>
 - RACE_DISTANCE_TO_COMPETITOR_FARTHEST_AHEAD_IN_METERS<br/> 
 - NUMBER_OF_MANEUVERS<br/>
 - CURRENT_LEG<br/>
+There is also the 'ALL' shortcut constant which can be used to get all available race details without the need to enumerate them.<br/>
 <br/>
 <table>
 	<tr>