Fix port.

Author: wu-sheng

apm-sniffer/config/agent.config

@@ -17,7 +17,7 @@ agent.application_code=Your_ApplicationName
 # Examples：
 # Single collector：SERVERS="127.0.0.1:8080"
 # Collector cluster：SERVERS="10.2.45.126:8080,10.2.45.127:7600"
-collector.servers=127.0.0.1:12800
+collector.servers=127.0.0.1:10800
 
 # Logging level
 logging.level=DEBUG