caniuse: improve support titles to better match caniuse.com

[sidvishnoi]

https://github.com/marcoscaceres/respec.org/blob/2cb8ea577c835637edc6644a0e4ae3f92058f403/routes/caniuse/lib/constants.ts#L20-L28

Also improve language for multi-status ('yd' / 'ad') titles.