Misleading README Promise usage

[Ovissse]

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This issue is for a:

• bug
• feature request
• modification request
• documentation

Return Object Properties

Targeted modules of this loader must export either a Function or Promise that returns an object containing a code property at a minimum, but can contain any number of additional properties.

The part "export either a Function or Promise that" seems misleading.While checking loader source code I noticed that it expects function that returns object code or Promise. As I suspected passing returning promise in module export generates errors

[alexander-akait]

Please read carefully.

Targeted modules of this loader must export either a Function or Promise
that returns an object containing a code property at a minimum, but can
contain any number of additional properties.