working-groups: Update wording for active WGs (#290)
working-groups: Update wording for active WGs (#290)

Eventually we were going to link them to more information, and then
@RichardLitt did just that. So, I updated the wording.

Signed-off-by: Justin W. Flory (he/him) [UNICEF Innovation] <5b4b0c7a22bd3f3af60417b840732105387b8dd2@unicef.org>
sustainers/website,sustainers/website,sustainers/website