Excellent job! Maybe you are already thinking about it, but... You can add a Search Bar and Go version & language selection for the documentation. (i.e. see (bottom left): https://docs.godotengine.org/en/stable/)
Also I just published this on /r/golang if you do not mind. :)
Thank you for those suggestions. Adding a search bar is already in my todo list. I will probably use Algolia.
Thank you for posting this on reddit ! I tried to do it but I made a mistake in the title, so I deleted the post and posted again (I never posted on reddit before). Now it seems that my second post is not really visible.
Also I just published this on /r/golang if you do not mind. :)