Firebeetle - Arduino board manager index URL wrong

In your articlr on setting up the M0 Firebeetle device, here, it specifies one should add this link (http://download.dfrobot.top/firebeetle/package_firebeetle_index.json)  into the additional boards manager URL list.

However, the actual link appears to be http://download.dfrobot.top/firebeetle/package_DFRobot_test_index.json

Maybe it's being tested or something but “package_DFRobot_test_index.json” should be renamed to “package_firebeetle_index.json” or the article should be updated.

Reporting it here in case someone else has a problem