Cleaned up tags e2e webhook test
Cleaned up tags e2e webhook test

refs https://github.com/TryGhost/Ghost/issues/15537
refs https://github.com/TryGhost/Ghost/commit/4110ffaa2cb5700cc453044fe21ee3e65762626f

- The test had minor formatting issues not worth an extra back-forth during the PR review

TryGhost/Ghost,TryGhost/Ghost,TryGhost/Ghost