fix rendezvous compile error

Author: fryorcraken

waku/waku_rendezvous/protocol.nim

@@ -77,7 +77,7 @@ proc batchAdvertise*(
       conn
 
   let advertCatch = catch:
-    await self.rendezvous.advertise(namespace, ttl, peers)
+    await self.rendezvous.advertise(namespace, some(ttl), peers)
 
   for conn in conns:
     await conn.close()