Change janetdocs.com to .org

[veqqq]

I hope these two templates cover it.

I wasn't sure whether I should change all the saved html - I was surprised by its presence in the repo instead of only templates. Swlkr said he will redirect .com to .org, so eventually the old ones will break (due to my new url scheme with package names) (deprecated bindings will break on the change, though). If you decide to change them, ctrl-f:

• janetdocs.com/ -> janetdocs.org/core-api/ (note the /)
• janetdocs.com" -> janetdocs.org" (for indexes, note the ")

[sogaiu]

I wasn't sure whether I should change all the saved html - I was surprised by its presence in the repo instead of only templates.

I think it's probably worth examining what might be involved in modifying the saved .html files (though may be that could be a separate PR if it seems worth doing?).

For reference, the following might give an idea for just 1.10.1:

$ rg -c Community\ Examples\</a 
api/debug.html:9
api/peg.html:2
api/parser.html:13
api/net.html:6
api/math.html:40
api/fiber.html:9
api/module.html:4
api/table.html:6
api/os.html:32
api/file.html:8
api/array.html:12
api/tuple.html:5
api/string.html:20
api/tarray.html:7
api/int.html:2
api/buffer.html:16
api/thread.html:5
api/index.html:461
doc.html:461

IIUC, 1.10.1 is the first version from which there were links to janetdocs.com. I don't see such links for 1.9.1 or 1.8.1 and presume that means nothing lower has such links.