Sample courses do not handle endpoint URLs with a trailing slash

[thomasturrell]

Currently the sample courses expect that the endpoint URL does not contain a trailing slash. If the endpoint URL does contain a trailing slash then the course will make requests with URLs that contain double slashes.

For example:

https://example.com/xapi//activities/state?stateId=LMS.LaunchData

(URL shorted for readability)

If the LRS uses a HTTP firewall it will reject requests that contain a double slash.

See issue 710 in the cmi5 repository for more details.

[andyjohnson]

Per the 5/20/22 call, @brianjmiller will resolve with their team.

[brianjmiller]

This should get resolved once we can get RusticiSoftware/cmi5.js#9 worked through the release process. cmi5.js would need to cut a new release, then bump the dependency in the CATAPULT repo for that library.