Include the version number for the version of the API docs shown

[rocketnova]

Thank you for this helpful resource!

I think it would be really helpful to show what version of the API is being displayed on https://docs.obsidian.md. Perhaps on the Home page. In addition, I think it would be really helpful to provide a direct link to the API repo in case there is drift.

While working on some plugin PRs based on the recent v1.4.0 API updates, I ran into an issue where I was really confused about why some of the new functionality I was seeing in the 1.4.5 Desktop app wasn't reflected in the TypescriptAPI section of https://docs.obsidian.md. It took me awhile to realize that this repo is out of date from https://github.com/obsidianmd/obsidian-api.

[rocketnova]

Also is there a plan to update the developer docs site to reflect v1.4.4 of the typescript API?