Ensure jwe, labeled_rate, url, text fields show e.g. url, not url2

[Iinh]

Fixes #1450.

1. For metric types jwe, labeled_rate, url, text, show e.g. url for metric field, not url2
2. Since for live and stable tables, the metric field has the suffix 2, add a note to clarify so.

Preview: https://deploy-preview-1461--glean-dictionary-dev.netlify.app/apps/mdn_yari/app_ids/mdn-yari/tables/action?page=1&search=metrics.url%20

[fbertsch]

This is exactly what we want, but unfortunately the stable table views don't do this mapping like I expected. Let me throw up a PR with that change and then we can proceed with this one.

[Iinh]

This is exactly what we want, but unfortunately the stable table views don't do this mapping like I expected. Let me throw up a PR with that change and then we can proceed with this one.

Hi @fbertsch, any updates on ⬆️?

[Dexterp37]

This is exactly what we want, but unfortunately the stable table views don't do this mapping like I expected. Let me throw up a PR with that change and then we can proceed with this one.

Hi @fbertsch, any updates on ⬆️?

I talked to @fbertsch , the relevant information are in this bug. Unfortunately the old PR is no longer available, so we need somebody to push this work forward before tackling this.