fix(conf): add missing traffic-split to stream_plugins in config.yaml.example

Author: Baoyuantop

conf/config.yaml.example

@@ -574,6 +574,7 @@ stream_plugins:                    # stream plugin list (sorted by priority)
   - ip-restriction                 # priority: 3000
   - limit-conn                     # priority: 1003
   - mqtt-proxy                     # priority: 1000
+  - traffic-split                  # priority: 966
   #- prometheus                    # priority: 500
   - syslog                         # priority: 401
   # <- recommend to use priority (0, 100) for your custom plugins