Guidance on braille properties #1825
Description
Add guidance for https://w3c.github.io/aria/#aria-braillelabel and https://w3c.github.io/aria/#aria-brailleroledescription to support aria spec.
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Add guidance for https://w3c.github.io/aria/#aria-braillelabel and https://w3c.github.io/aria/#aria-brailleroledescription to support aria spec.