Submitted: Jul 5, 2008 - WIMBLEDON, England (AP) -- Thrilled as she was to win her fifth Wimbledon singles championship, Venus Williams dialed down her celebration. No hopping in place and skipping to the net after match point, the way she's done so often on that Centre Court lawn. No giddy laughter and whoops of joy, as she's let out in the past. This title was different from her previous successes at the…