[docs] date/version the docs on the site

[andrewalex]

Summary

It would be tremendously helpful if the documentation on the website contained 'last reviewed/modified' date on the various pages or at a minimum a version number.

For instance, https://docs.expo.dev/router/introduction/ it's not immediately apparent if this documentation has been updated for the latest version of expo.

Additionally various pages subtly conflict with each other or have newer methods of performing the same function. Having a date would provide context when trying to follow along.

Hopefully there is an automated way to add this to the header.

Link to the related docs page

https://docs.expo.dev/router/introduction/

Anything else?

No response

[amandeepmittal]

Hi @andrewalex, this has been on our radar for some time and we'll look into adding something soon. Thanks for sharing your feedback about this!