Edits to follow up contribution guidelines work

[theletterf]

This PR consolidates contribution docs further and erases the hidden contribution-guidelines doc, which was redundant.

• Fixes Followup updates to Contributing info #3767
• Fixes Contribution guidelines needs rework or should be dropped #897

Preview: https://deploy-preview-3846--opentelemetry.netlify.app/docs/contributing/

Redirect test: https://deploy-preview-3846--opentelemetry.netlify.app/docs/contribution-guidelines

[theletterf]

@svrnm @chalin Did the mirrored documentation guidelines change / were removed? I don't think we've them in prod: 7c1dcce

Can't trace when/where they were removed. I take they no longer apply, as we use a more generic language in our new contribution guide. As they were still linked from contribution-guidelines I was wondering.

[theletterf]

Also, do we want to promote the newly created https://github.com/open-telemetry/opentelemetry.io/discussions board? I'd wait a bit before doing so, perhaps...

[svrnm]

lgtm, but I'd like to also get @chalin's approval

[chalin]

One suggested tweak, otherwise LGTM overall :)

[chalin]

Oh! We need to add an alias for the page that was removed.

[chalin]

@svrnm @chalin Did the mirrored documentation guidelines change / were removed? I don't think we've them in prod: 7c1dcce

Those guidelines no longer apply.

For context, see:

• Ensure non-API docs are hosted on opentelemetry.io #833
• Ensure that all doc pages have a single source repo #730

[chalin]

Also, do we want to promote the newly created https://github.com/open-telemetry/opentelemetry.io/discussions board? I'd wait a bit before doing so, perhaps...

I'm ok with waiting a bit too.

[theletterf]

@chalin Changes applied, thanks!

The alias is already here I think? https://github.com/open-telemetry/opentelemetry.io/pull/3846/files#diff-a3d923889a7028820da3c39a743bd702eb33e7333b64009b1384d444c7a1561aL4

[chalin]

@chalin Changes applied, thanks!

👍

The alias is already here I think? https://github.com/open-telemetry/opentelemetry.io/pull/3846/files#diff-a3d923889a7028820da3c39a743bd702eb33e7333b64009b1384d444c7a1561aL4

Yes! 👍🏻

[chalin]

👍🏻