message: doxy: fix sparkfun image license version in template
  Sparkfun provided images are covered under CC BY 2.0, update license on documentation template to reflect correct license.
diff: <p>
  The UPM API is a high level sensor library for IoT devices using MRAA. See examples <a href="https://github.com/intel-iot-devkit/upm/tree/master/examples/javascript">here</a>.
  Back to <a href="http://iotdk.intel.com/docs/master/upm/node/"> index </a> page.
  - <br><em>SparkFun sensor images provided under <a href=https://creativecommons.org/licenses/by-nc-sa/3.0/>CC BY-NC-SA-3.0</a>.</em>
  + <br><em>SparkFun sensor images provided under <a href=https://creativecommons.org/licenses/by/2.0/>CC BY 2.0</a>.</em>
  </p>
  </div>
  </div>
  