`VersionStringOptions.InternalFilename` should be `InternalName`

[russellmcc]

The VersionStringOptions interface defines InternalFilename as a property name:

/** Internal name of the file. Usually, this string should be the original filename, without the extension. */
InternalFilename?: string

However, Windows docs for StringFileInfo documents InternalName, not InternalFilename

Since the Node wrapper passes object keys verbatim to --set-version-string, using InternalFilename writes a non-standard field into the binary's version info rather than the intended InternalName field.

The property should be renamed to InternalName in index.d.ts.