Replace zozo logo with an official one (#11629)
Replace zozo logo with an official one (#11629)

Signed-off-by: Yoichi Kawasaki <cbe5f4886abf92e3ce2b0a111d6dafbb5f6e6a1c@gmail.com>
istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io