message: Fix model link.
diff: _PoseNet_ is a vision model that can be used to estimate the pose of a person in
  an image or video by estimating where key body joints are.
  -<a class="button button-primary" href="https://storage.googleapis.com/download.tensorflow.org/models/tflite/posenet_mobilenet_v1_100_513x513_multi_2019_08_01.tflite">Download
  -starter model</a>
  +<a class="button button-primary" href="https://storage.googleapis.com/download.tensorflow.org/models/tflite/posenet_mobilenet_v1_100_513x513_multi_kpt_stripped.tflite">
  +Download starter model</a>
  Android and iOS end-to-end tutorials are coming soon. In the meantime, if you
  want to experiment this on a web browser, check out the
  