fix: wrong function usage

lua/CC Tweaked/tutel/tutel-host.lua

@@ -191,17 +191,20 @@ local function handleMessages(side, channel, replyChannel, message, dist)
         log.error("error occurred while executing command %s: %s", message.name, err)
     end
 end
-declareCommandHandler("modem_message", handleMessages)
+registerEventListener("modem_message", handleMessages)
+
 --[[
     main
 ]]
-
 log.general("tutel host init")
 
 -- transmit scan
+log.info("broadcasting SCAN")
 sendToAll("SCAN", { ["hostChannel"] = HOST_CHANNEL })
-log.info("broadcasted scan message")
 
+--[[
+    loop functions
+]]
 function updateScreen()
     local w, h = term.getSize()