changed datetime type on Example with default item

[SGiumelli]

General Contributing:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

All New Content Submissions: (To be confirmed by reviewer)

• Title is short & specific
• Headers are logically ordered & consistent
• Purpose of document is explained in the first paragraph
• Procedures are tested and work
• Any technical concepts are explained or linked to
• Document follows structure from templates
• All links work
• The spelling and grammar checker has been run
• Graphics and images are clear and useful
• Any prerequisites and next steps are defined.

[vercel]

@SGiumelli is attempting to deploy a commit to the TinaCMS Team on Vercel.

A member of the Team first needs to authorize it.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
tina-io	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 3, 2023 9:53am