First @ mention is not a hyperlink in Twitter onebox

[sam (Sam Saffron)]

https://twitter.com/flaximus_prime/status/882330747113283585

@ben11kehoe should be a hyperlink to the user but it is not.

@techAPJ can you add to your list?

[techAPJ (Arpit Jalan)]

Fixed in:

https://github.com/discourse/discourse/commit/c47658c7c5326512f91dd8415acce5d071aee0fc