Document link contest connection

src/battle_tower.c

@@ -2627,7 +2627,7 @@ static void LoadLinkMultiOpponentsData(void)
         }
         break;
     case 4:
-        sub_800AC34();
+        SetCloseLinkCallback();
         gSpecialVar_Result = 5;
         break;
     case 5:
@@ -2644,7 +2644,7 @@ static void LoadLinkMultiOpponentsData(void)
 static void sub_8164DCC(void)
 {
     if (gWirelessCommType != 0)
-        sub_800AC34();
+        SetCloseLinkCallback();
 }
 
 static void SetMultiPartnerGfx(void)