Fix github URL on about page - was honolulu repo, is now cfa repo.
Fix github URL on about page - was honolulu repo, is now cfa repo.

hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers