Update the SDK and Version dropdowns to include location hash

[stnguyen90]

What does this PR do?

Update the SDK and Version dropdowns to include location hash. Prior to this, if you:

1. Browse to API docs like the Databases API docs
2. Click on a link on the right side like Get Document
3. Switch your SDK

You would jump to the top of the page instead of still being on the Get Document API.

Screen.Recording.2022-10-24.at.8.48.18.AM.mov

After this, you would stay on the API you last clicked on after switching the version or SDK.

Test Plan

Manual

Related PRs and Issues

Based off the following PR:

• Add version param to H2 anchor links #269

Have you read the Contributing Guidelines on issues?

Yes

[gewenyu99]

This does preserve location for the most part. When we change the name of endpoints, it'll jump back to the top of the page because there's no matching hash, which is fine.

It works really well when I switch SDKs, which is great.

Now the real question is, since we're already adding JS, who don't we track scroll location?

[stnguyen90]

Now the real question is, since we're already adding JS, who don't we track scroll location?

@gewenyu99, that seems much higher effort 😅

[gewenyu99]

I tested this on homepage, works great. Idk if the implementation is optional, I'll leave it to engineering to decide :)

[gewenyu99]

Tested again, lgtm

[eldadfux]

Would love to get some more context are a short example to fully understand the new suggested behavior.

[stnguyen90]

Would love to get some more context are a short example to fully understand the new suggested behavior.

@eldadfux, I've updated the description.

[gewenyu99]

@stnguyen90 The scroll bars look so weird there! is this what it looks like on windows?