[Document Need Update] Manual 6.5.36 miss one parameter

[renweibo]

At first, I need say thanks to you. This vpn looks awesome.

Recently, I'm reading the manual and find one minor issue. For section 6.5.36, it miss description for "/USERNAME:username".


Here is the document link.

https://www.softether.org/4-docs/1-manu ... _Reference