Fixed #22932: Documented circular dependency issues with swappable user

   is created in the first migration of its app (usually called ``0001_initial``);

   otherwise, you will have dependency issues.

   In addition, you may run into a CircularDependencyError when running your

   migrations as Django won't be able to automatically break the dependency

   loop due to the dynamic dependency. If you see this error, you should

   break the loop by moving the models depended on by your User model

   into a second migration (you can try making two normal models that

   have a ForeignKey to each other and seeing how ``makemigrations`` resolves that

   circular dependency if you want to see how it's usually done)

Referencing the User model

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