[site][fix] Display issues on Reference site

[Anonymitaet]

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Motivation

We (@tisonkun) have found some issues on the Pulsar Reference Site.

/cc @SignorMercurio @urfreespace

There are other tricky issues with the site navigation.
Try to clear the cache and re-visit to see if those issues exist.
If still have, feel free to add your suggestions under this issue, thanks!

/cc @momo-jun @DaveDuggins @D-2-Ed

Solution

1. Fix 404 issues

https://pulsar.apache.org/reference/#/next/client/client-libraries-java

2. Remove redundant metadata

2.1 Remove this for 2.6.x, 2.7.x, 2.8.x, 2.9.x

https://pulsar.apache.org/reference/#/2.9.x/config/reference-configuration

2.2 Remove this for 2.6.x, 2.7.x, 2.8.x, 2.9.x

https://pulsar.apache.org/reference/#/2.6.x/client/client-libraries-java

Alternatives

No response

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!

[github-actions]

The issue had no activity for 30 days, mark with Stale label.

[tisonkun]

Issue 1 has been fixed. I'm looking into Issue 2s in this week.