[Bug] author-in-team isn't labeling when author is a member of the specified team

[swrobel]

I have tested this in our repo, and believe I have an explanation of why this isn't working:

The go github function that is called, GetOrgMembership, uses the "Get organization membership for a user" endpoint, which doesn't seem to contain any info about the teams within that org that the user is a member of. Also, we are passing a team string to the second argument, which expects an org string instead, leading to 404s always being returned in the logs from the action:

[Author is member of team] skip, GET https://api.github.com/orgs/{team}/memberships/{user}: 404 Not Found []

I think instead, you may need to use the GetTeamMembershipBySlug function, which requires:

1. org identifier (perhaps this is already available somewhere for other API calls that are already being made by labeler? Otherwise, it will probably have to be added to config)
2. team slug, as opposed to the team name (as currently documented), which can contain spaces
3. user (we already have this)

[srvaroa]

Many thanks for the report and triage. I will fix this in the next few days.