[FIX] _mark_migration_done_in_migration_issue : Call _find_issue with correct number of parameters

[legalsylvain]

Blind commit. (not tested).

Should fix @pedrobaeza remarks https://github.com/OCA/oca-github-bot/pull/192#issuecomment-1596218816

CC : @sbidoul.

Don't understand how it could have worked in my test (https://github.com/grap-org-test-bot/github-ocabot-test/issues/27), but well !

[sbidoul]

This is now deployed.

[pedrobaeza]

Trying in https://github.com/OCA/hr-expense/pull/155

[legalsylvain]

Looks OK.