WALKOFF Trigger Management Documentation Not found

[rams3sh]

I was browsing through this article and found that the below link provided is broken :-

https://nsacyber.github.io/WALKOFF/tutorials/build/Trigger_Management.html

Is there any other documentation that I can refer to for getting details regarding external web hook triggering a workflow ?

I have been doing a trial and error with absence of documentation. Have'nt gotten any far till now :P .