doc: gesture_recognition: add link to HIDS subsys in the dependencies

Gesture Recognition now uses The Bluetooth HID Service subsystem in the
HID interface configuration so it needs to be mentioned in
the Dependencies section.

Signed-off-by: Michał Grochala <michal.grochala@nordicsemi.no>

Author: grochu

applications/gesture_recognition/README.rst

@@ -491,6 +491,7 @@ Dependencies
 This sample uses the following |NCS| services:
 
 * `Nordic UART Service (NUS)`_
+* `HID Service`_
 
 This sample uses the following Zephyr libraries:
 

doc/links.txt

@@ -78,6 +78,7 @@
 .. _`Sensor`: https://docs.nordicsemi.com/bundle/ncs-3.3.0-preview2/page/zephyr/hardware/peripherals/sensor/index.html#sensor
 .. _`Nordic UART Service (NUS)`: https://docs.nordicsemi.com/bundle/ncs-3.3.0-preview2/page/nrf/libraries/bluetooth/services/nus.html
 .. _`TensorFlow Lite for Microcontrollers: Hello World`: https://docs.nordicsemi.com/bundle/ncs-3.3.0-preview2/page/zephyr/samples/modules/tflite-micro/hello_world/README.html#tflite-hello-world
+.. _`HID Service`: https://docs.nordicsemi.com/bundle/ncs-3.3.0-preview2/page/nrf/libraries/bluetooth/services/hids.html
 
 .. ### Source: edgeimpulse.com