[DevComm] Add details about returned matrices

### Type of issue

Missing information

### Description

Please add for Matrix4x4 documentation details about how the returned matrices are structured.

For example, this page could benefit from details in the style used here (see the Remarks details) : https://learn.microsoft.com/en-us/previous-versions/windows/desktop/bb281727(v=vs.85)

It would be of great help for people learning about stuff like this, and self-checking own expectations.

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.numerics.matrix4x4.createperspectivefieldofviewlefthanded?view=net-10.0

### Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.Numerics/Matrix4x4.xml

### Document Version Independent Id

72b59e80-74f8-5c89-97ee-98561f67b6bf

### Platform Id

7fdb4331-09e8-5352-f676-1bd83e89cca9

### Article author

@dotnet-bot