doc: add local_port for tcpmux example
@@ -985,11 +985,13 @@ server_port = 7000
type = tcpmux
multiplexer = httpconnect
custom_domains = test1
+local_port = 80
[proxy2]
type = tcpmux
multiplexer = httpconnect
custom_domains = test2
+local_port = 8080
```
In the above configuration - frps can be contacted on port 1337 with a HTTP CONNECT header such as:
