`groups` parameter description is possibly incomplete for `upload_to_testflight` action doc

https://docs.fastlane.tools/actions/testflight/

For the `groups` parameter of the `upload_to_testflight` doc it says:

> Associate tester to one group or more by group name / group id. E.g. -g "Team 1","Team 2" This is required when `distribute_external` option is set to true or when we want to add a tester to one or more external testing groups

But `groups` is also for associating the uploaded build to the specified group, no? Should it say something like: "When a specific tester is specified, assigns them to the specified groups. When a build is being uploaded, this parameter controls adding the build to the specified group." (That'd need to be edited of course.)

It is also unclear if you need to set `skip_waiting_for_build_processing` to `false` for the latter to work properly?