add docs for v0.5.2 and fix nav issues

[geoffcline]

1. Issue, if available:
new release

2. Description of changes:
add docs for v0.5.2 and fix nav issues

3. Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: link to issue
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[netlify]

✔️ Deploy Preview for karpenter-docs-prod canceled.

🔨 Explore the source changes: c1b8d94

🔍 Inspect the deploy log: https://app.netlify.com/sites/karpenter-docs-prod/deploys/61b268f1d0ea130008d11c44

[ellistarn]

I think this is used everywhere for all versions of docs, unfortunately. It would be nice if we somehow had access to params.versions[something].version. I couldn't figure this out though.

[ellistarn]

We don't need to block on this, though.

[geoffcline]

@akestner will you take a look at why this failed? The log is curious to me

2:37:19 PM: No changes detected in base directory. Returning early from build.
2:37:20 PM: Creating deploy upload records
2:37:20 PM: Failed during stage 'checking build content for changes': Canceled build due to no content change
2:37:20 PM: Finished processing build request in 12.537953172s