There is a small typo in code example for deleting metafield storefront visibility using GraphQL Admin API
The mutation name in the example is metafieldStorefrontVisibilityDelet instead of metafieldStorefrontVisibilityDelete (letter 'e' missing)
ref - https://shopify.dev/tutorials/retrieve-metafields-with-storefront-api#hide-metafields-from-the-store...
Thanks for letting us now! I fixed the typo in the docs, but it should take a bit before it's reflected in the webpage.Edit: The doc has been updated!