Typically I've found this is done mostly with curl examples, but if you want to offer "pure" PowerShell friendly approaches as well you can show how to do it with Invoke-RestMethod.
Similar feedback from @cauldnz - recommended using the portal rather than browser as that was fiddly.
Going with using the portal since it is already open from previous step. Reduces friction.
The "Executing predictions against the LUIS app version endpoint" step of the "feature-branches-and-running-pipelines" document suggests making a browser request to test the prediction endpoint. I would suggest showing how to do this with the CLI... either in instead of or at least in addition to the browser.
Typically I've found this is done mostly with
curl
examples, but if you want to offer "pure" PowerShell friendly approaches as well you can show how to do it withInvoke-RestMethod
.