No easy way to provide link to versioned 1.1 Hydra docs

[Jasha10]

It is easy to provide a link to the Hydra docs at version 1.0, e.g. https://hydra.cc/docs/1.0/intro.

When providing links to pages of the version 1.1, however, the version number does not appear in the url, e.g. https://hydra.cc/docs/intro.

When providing such links in e.g. answers to user questions, I fear that the links will become outdated. It would be nice if our website had a way to provide a versioned link for the latest stable version.

[omry]

Since 1.1 docs are done, it's a good time to tag a docusaurus version for it. This will enable such links and ensure doc changes are not changing the 1.1 docs.

[Jasha10]

it's a good time to tag a docusaurus version for it.

I've been having trouble with this in PR #1877. We already have versioned docs for v1.1 (i.e. website/versions.json has a version 1.1, and website/versioned_docs/version-1.1 exists with a frozen copy of the docs).

The problem is that there's no way to get a permalink to the v1.1 docs.
According to the table from the docusaurus docs here, this seems to be expected:

Path	Version	URL
versioned_docs/version-1.0.0/hello.md	1.0.0	/docs/1.0.0/hello
versioned_docs/version-1.1.0/hello.md	1.1.0 (latest)	/docs/hello
docs/hello.md	current	/docs/next/hello

See that the URL for the latest docs version is /docs/hello, and does not contain a version number. In other words, there seems to be no way to make a permalink to our v1.1 docs until after the v1.2 docs have been pinned.

This seems to be related to docusaurus issues filed here and here.