dt-bindings: vendor-prefixes: correct the spelling of TQ-Systems GmbH

"TQ-Systems" is written with a dash, as can be seen on
https://www.tq-group.com/en/imprint/Signed-off-by: Max Merchel <Max.Merchel@tq-group.com>
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Link: https://lore.kernel.org/r/20201207093036.29824-1-matthias.schiffer@ew.tq-group.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1099,7 +1099,7 @@ patternProperties:
   "^tpo,.*":
     description: TPO
   "^tq,.*":
-    description: TQ Systems GmbH
+    description: TQ-Systems GmbH
   "^tronfy,.*":
     description: Tronfy
   "^tronsmart,.*":