message: [docs] add bazel installation step for lint checks
diff: @@ -12,7 +12,11 @@ For instructions on how to configure Visual Studio Code for developing TensorFlo
  TensorFlow I/O's code conforms to Bazel Buildifier, Clang Format, Black, and Pyupgrade.
  Please use the following command to check the source code and identify lint issues:
  +
  ```
  +# Install Bazel version specified in .bazelversion
  +$ curl -OL https://github.com/bazelbuild/bazel/releases/download/$(cat .bazelversion)/bazel-$(cat .bazelversion)-installer-darwin-x86_64.sh
  +$ sudo bash -x -e bazel-$(cat .bazelversion)-installer-darwin-x86_64.sh
  $ bazel run //tools/lint:check
  ```
  