dt-bindings: net: realtek-bluetooth: Fix double RTL8723CS in desc

The description says 'RTL8723CS/RTL8723CS/...' whereas the title and
other places reference 'RTL8723BS/RTL8723CS/...'.

Signed-off-by: Diederik de Haas <didi.debian@cknow.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230509141500.275887-1-didi.debian@cknow.org
Signed-off-by: Rob Herring <robh@kernel.org>

Author: diederikdehaas

Documentation/devicetree/bindings/net/realtek-bluetooth.yaml

@@ -11,7 +11,7 @@ maintainers:
   - Alistair Francis <alistair@alistair23.me>
 
 description:
-  RTL8723CS/RTL8723CS/RTL8821CS/RTL8822CS is a WiFi + BT chip. WiFi part
+  RTL8723BS/RTL8723CS/RTL8821CS/RTL8822CS is a WiFi + BT chip. WiFi part
   is connected over SDIO, while BT is connected over serial. It speaks
   H5 protocol with few extra commands to upload firmware and change
   module speed.