Mention that column names can be controlled via the Column attribute

The article states that developers can use HasColumnName to change the default naming of owned entities. It would be beneficial to add that we can also use the Column attribute to control the name. Some people prefer to control these things via attributes and the article as it is makes it sound as if the only supported way is the configuration method

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#### Document Details

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* ID: d02e6748-42e0-000a-4945-42cd05a0b875
* Version Independent ID: e3effbd0-07f2-423d-4032-1722e75adb37
* Content: [Owned Entity Types - EF Core](https://docs.microsoft.com/en-us/ef/core/modeling/owned-entities)
* Content Source: [entity-framework/core/modeling/owned-entities.md](https://github.com/dotnet/EntityFramework.Docs/blob/master/entity-framework/core/modeling/owned-entities.md)
* Product: **entity-framework**
* Technology: **entity-framework-core**
* GitHub Login: @AndriySvyryd
* Microsoft Alias: **avickers**