Update persistState configuration format

[roerohan]

Summary

persistState accepts a { path: '...' } object and not a string.

type PersistState = boolean | {
  path: string;
};

Screenshots (optional)

Documentation checklist

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[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/docs/workers/	@cloudflare/workers-docs, @GregBrimble, @irvinebroque, @mikenomitch, @korinne, @WalshyDev, @cloudflare/deploy-config, @cloudflare/pcx-technical-writing, @cloudflare/wrangler, @cloudflare/workers-runtime-1, @mattietk

[github-actions]

Preview URL: https://b6cf453e.preview.developers.cloudflare.com
Preview Branch URL: https://persist-state-path.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/workers/development-testing/local-data/	https://persist-state-path.preview.developers.cloudflare.com/workers/development-testing/local-data/