Not the first one I have missed. Won't be the last.
Other CGs have ended in surprisingly-quick fashion and their descriptions (written to announce them) have not been updated. Having said that, I have not found it difficult to learn when a CG ended 'early.'
In-ship, if I select the
mission board and select
Community Goals, it shows that none are available, even though the full-week duration would have taken it to Nov 11.
I do believe that it was unnecessary to reduce the amounts of goodies delivered to progress thru the tiers. The Phase-1 CG was also very popular and hit the top tier with higher requirements.