Adding link to North 770 page

Suggestion from spookysnoo on Sept. 23, 2021, 12:32 p.m.

I saw there was a Honeywell North 7700 page so I added a link.

Changes in this suggestion:

Comment from philipn on Sept. 23, 2021, 1:07 p.m.

Thank you!  👏👏I was planning on linking the page once it was fleshed out (it's just once sentence now), but I'll accept the suggestion now and hopefully add more to the page soon.