opponent info: add league hiscore endpoint

Co-authored-by: Hydrox6 <ikada@protonmail.ch>

runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoPlugin.java

@@ -117,6 +117,10 @@ public class OpponentInfoPlugin extends Plugin
 		{
 			hiscoreEndpoint = HiscoreEndpoint.DEADMAN;
 		}
+		else if (worldType.contains(WorldType.LEAGUE))
+		{
+			hiscoreEndpoint = HiscoreEndpoint.LEAGUE;
+		}
 		else
 		{
 			hiscoreEndpoint = HiscoreEndpoint.NORMAL;