Mention Safari’s accessibility info for nodes in the “See the accessibility tree” tip

[knowler]

Safari might not include a full accessibility tree view, but it is possible to see accessibility related information in the Node panel of the Details sidebar within the Elements tab of Web Inspector. I think mentioning this in the “See the accessibility tree” tip could be helpful for developers who might want to find out if there’s an alternative to the tree in Safari (still would love if Safari could visualize the tree).

I might be able to contribute here once I wrap up some other writing commitments.