Support non version pages on the website

[arkodg]

Description:

Describe the desired behavior, what scenario it enables and how it would be used.

Currently user docs such as https://gateway.envoyproxy.io/v0.6.0/user/ have the version as a path prefix. This makes it hard to save this page in other locations because it points a specific version (which will soon become an older version) . Instead we should also support https://gateway.envoyproxy.io/user/ which points to the current version

[optional Relevant Links:]

Any extra documentation required to understand the issue.

[arkodg]

cc @Xunzhuo

[lou-lan]

The 'latest' version is always fixed, https://gateway.envoyproxy.io/latest/design/goals/

[arkodg]

@lou-lan , its also unstable, and not recommended for all users

[zirain]

do you mean select current version(0.6.0) as default?

[arkodg]

I would like to add reference in other projects/documentations that do not have version in the path prefix e.g. https://gateway.envoyproxy.io/user/ , that take the user to the newest stable version (v0.6.0 as of today, maybe v0.7.0 once its releases)

[zirain]

I'm not sure, but maybe https://github.com/istio/istio.io/pull/15092/files will help.

[zirain]

fixed by https://github.com/envoyproxy/gateway/pull/3819