Fan(n)Mode should probably be FanMode

[petrvanekrobe]

Copy paste from forum.

The GDTF spec lists Fan Mode under Annex A as:

Fan(n)Mode	Controls fan (n) mode.

However, in Annex B it is listed as

<Attribute Name="FanMode" Pretty="Fan Mode" Feature="Control.Control" />  

Without the `(n)`.

I have found quite a lot of GDTF files (863 to be precise) with `FanMode` without the `(n)` so my current best guess is that is supposed to be `FanMode`.
 

The GDTF spec lists Fan Mode under [Annex A](https://github.com/mvrdevelopment/spec/blob/main/gdtf-spec.md#annex-b-normative-attribute-listing) as: Fan(n)Mode Controls fan (n) mode.

However, in Annex B it is listed as

Without the (n).

I have found quite a lot of GDTF files (863 to be precise) with FanMode without the (n) so my current best guess is that is supposed to be FanMode.