message: Updated bug-issue template. Earlier I did update the template through GitHub PR but copybara is formatting the template and the template became unusable.
diff: ---------------------------------------------------------------------------------
  -
  -name: Bug Issue about: Use this template for reporting an issue related to bug.
  +---
  +name: Bug Issue
  +about: Use this template for reporting an issue related to bug
  labels: 'type:bug'
  ---------------------------------------------------------------------------------
  +---
  <em>Please make sure that this is a bug. As per our
  [GitHub Policy](https://github.com/tensorflow/tensorflow/blob/master/ISSUES.md),
  