#4936 Add note for AppUser navigation property usage.

docs/en/Entities.md

@@ -293,7 +293,7 @@ While you can manually implement any of the interfaces defined above, it is sugg
 
 All these base classes also have non-generic versions to take `AuditedEntity` and `FullAuditedAggregateRoot` to support the composite primary keys.
 
-All these base classes also have `...WithUser` pairs, like `FullAuditedAggregateRootWithUser<TUser>`  and`FullAuditedAggregateRootWithUser<TKey, TUser>`. This makes possible to add a navigation property to your user entity. However, it is not a good practice to add navigation properties between aggregate roots, so this usage is not suggested (unless you are using an ORM, like EF Core, that well supports this scenario and you really need it - otherwise remember that this approach doesn't work for NoSQL databases like MongoDB where you must truly implement the aggregate pattern).
+All these base classes also have `...WithUser` pairs, like `FullAuditedAggregateRootWithUser<TUser>`  and `FullAuditedAggregateRootWithUser<TKey, TUser>`. This makes possible to add a navigation property to your user entity. However, it is not a good practice to add navigation properties between aggregate roots, so this usage is not suggested (unless you are using an ORM, like EF Core, that well supports this scenario and you really need it - otherwise remember that this approach doesn't work for NoSQL databases like MongoDB where you must truly implement the aggregate pattern). Also, if you add navigation properties to the AppUser class that comes with the startup template, consider to handle (ignore/map) it on the migration dbcontext (see [the EF Core migration document](Entity-Framework-Core-Migrations.md)). 
 
 ## Extra Properties