EFCore Scaffold-DbContext unclear about OutputDir

### Describe the issue or suggestion

In [this](https://learn.microsoft.com/en-us/ef/core/cli/powershell#scaffold-dbcontext) article, the description for OutputDir says "The directory to put entity class files in.". However, if you don't also pass the ContextDir parameter (or pass it as an empty string), the dbcontext file gets put in this directory as well.
It would be nice if the description could be updated to be more clear about this behaviour.
I found [this](https://learn.microsoft.com/en-us/ef/core/managing-schemas/scaffolding/?tabs=vs#target-directories-and-namespaces) article as well which describes it a bit better: "You can specify the directory where classes are scaffolded using -OutputDir, and -ContextDir can be used to scaffold the DbContext class into a separate directory from the entity type classes".

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#### Document Details

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* ID: 4dde2676-6cc2-daeb-c3e8-e2c4f4c6517c
* Version Independent ID: c5341d6b-fff6-d42b-2ccc-6a28c39f19a0
* Content: [EF Core tools reference (Package Manager Console) - EF Core](https://learn.microsoft.com/en-us/ef/core/cli/powershell#scaffold-dbcontext)
* Content Source: [entity-framework/core/cli/powershell.md](https://github.com/dotnet/EntityFramework.Docs/blob/main/entity-framework/core/cli/powershell.md)
* Service: **entity-framework**
* Sub-service: **entity-framework-core**
* GitHub Login: @bricelam
* Microsoft Alias: **avickers**