Update URLs in Current Meetups: North America section

[rosewms]

Meetup URLs show an error or 404. Seems to happen when people are not logged into Meetup.com - suggested workaround from a user is to replace the existing link with the WTD Group event link.

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:books: Documentation preview :books:: https://writethedocs-www--1985.org.readthedocs.build/

[plaindocs]

@rosewms please tag me when you're done?

[rosewms]

@plaindocs of course, I was waiting to tag you until I was done with this section.

Side note, I've identified the groups that will most likely be removed. Assuming their organizers continue to be inactive and don't respond to the survey.