Release process template: broken link for server commands

[pljones]

• Check ./Jamulus -h output against the Include-Client/Server-Commands.md pages and [man page (distributions/Jamulus.1)[(https://github.com/jamulussoftware/jamulus/blob/main/distributions/Jamulus.1). Update if necessary.

"https://github.com/jamulussoftware/jamuluswebsite/blob/next-release/wiki/en/Include-Server-Commands.md" -- this does not exist, unfortunately. There's some more detailed, scattered, information on what the options mean in the "Running a Server" document but not just the list of options. I've marked it done on the basis of my attempt to check that everything matched but ... well, I couldn't say for certain.

Originally posted by @pljones in #3443