Realm Hosting custom domain hostname is wrong

Description

Reading https://docs.mongodb.com/realm/hosting/use-a-custom-domain-name/#id4 I find that the target domain of the CNAME record is "<Your App ID>.mongodb*realm*.com", but I don't think the mongodbrealm.com domain is registered (yet).

It works if I access "<Your App ID>.mongodb*stitch*.com" - and I think its a typo introduced when renaming "stitch" to "realm".

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