Fixed default twitter card

[lcamacho]

• according to this Twitter docs the basic twitter card is summary.

[jaswilli]

Hi @lcamacho ,

I confirmed that this is an issue and that the the correct card type should be summary. Can you do me a favor and update your commit message according to: https://github.com/TryGhost/Ghost/wiki/Git-workflow#commit-messages

Since there's no specific issue opened for this PR, feel free to reference the original issue (refs #3900) or use "no issue" for the third line.

Thanks!

[lcamacho]

Besides add "no issue" to third line what else should I've to change from commit message?

[jaswilli]

That should do it.