* Add QNAP NAS TS-1685

* fixed new line at the and of file

* trailing spaces

* file renamed accordingly

* changed model

* Update TS-1685-D1521-16G-550W.yml

Fixing slug

* Update TS-1685-D1521-16G-550W.yml

Reverting slug because of multiple pn's for this model

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Co-authored-by: Mike Stuffel <mike.stuffel@gmail.com>
Co-authored-by: Daniel W. Anner <daniel.anner@danstechsupport.com>