[Feature Request] - add Calc Mode docs

[zetaomegagon]

Hi!

I found this website a bit ago, and while I mostly use info to read manuals, I actually use your website a lot during work since it's a bit easier to keep emacs in the buffer that I'm currently using for my Customer Support job.

I'm starting to replace using Gnome Calculator with Calc Mode and it would be awesome to have Calc Mode docs in this format.

I'm also low-key hoping it will make Calc Mode more visible / accessible to people.

Thanks for reading / considering!