Improve Search on the Webiste

The search on the website is quite useless.

1. On the main page if you search for a term it displays resluts in each doc version, and it is not clear from the list what version of the docs it belongs too.


2. A lot of links are broken
Here for example, the first search result [to link](https://goharbor.io/docs/main/working-with-projects/working-with-images/managing-helm-charts/#manage-helm-charts-with-the-oci-compatible-registry-of-harbor) is broken.


## Proposed Solution

1. On the homepage, the search will only show the results of the latest version, ignoring all other versions.
2. If the user wants to read/search old Version then.
3. the user should select the version in docs first.
4. After selecting the version the search input in version e.g. 2.10 only will show the result for this version of the docs.