Fixed spelling error. Updated bitlink to match Seattle's event.
Fixed spelling error. Updated bitlink to match Seattle's event.

svenlange/coderetreat.github.io,tpd-opitz/coderetreat.github.io,svenlange/coderetreat.github.io,tpd-opitz/coderetreat.github.io,coderetreat/coderetreat.github.io,yugangbai/coderetreat.github.io,svenlange/coderetreat.github.io,coderetreat/coderetreat.github.io,tpd-opitz/coderetreat.github.io,coderetreat/coderetreat.github.io,svenlange/coderetreat.github.io,yugangbai/coderetreat.github.io,yugangbai/coderetreat.github.io,coderetreat/coderetreat.github.io,yugangbai/coderetreat.github.io