Fixed a typo or two, moved one sentence, and replaced "timezone" with "time zone" throughout to match the rest of the file.

* Ask from user before quitting when using test-integrated-watch

* Add helpful logging to the runner script, refactor file hierarchy

* Add a way to dispatch browser events in tests

* Update test command names and rewrite the frontend testing docs

* Fix test failures

Looked like a typo.

Fixing step3 to point to the correct URL which is:
https://github.com/metabase/metabase-buildpack