Rationale for the changes:

* `requires migration` -> `uses some deprecated settings` changed
because really it isn't required by this version of Zed, and I believe
we hope to offer support for deprecated settings and their migration for
a long time.

* Rename of `migration` -> `updated` is because to me, "updated" feels
lighter and more accurate. To me migration has connotations of moving to
a whole new format.

Formatting changes are due to shortening the line causing cargo fmt to
go from not formatting the code to doing so.

Release Notes:

- N/A

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Co-authored-by: smit <0xtimsb@gmail.com>