message: Update the target name to build the installer with Bazel.
diff: @@ -145,5 +145,6 @@ The exact path should be specified (e.g. `QT_BASE_PATH = "/Users/mozc/myqt"`).
  ```
  cd ~/work/mozc/src
  -bazel build mac:installer_oss_macos --config macos -c opt
  +bazel build package --config macos -c opt
  +open bazel-bin/mac/Mozc.pkg
  ```
  