[nrf fromlist] bluetooth: audio: bap: fix Doxygen issue

Doxygen was getting confused when expanding @kconfig (verbatim block
within []).

Upstream PR: zephyrproject-rtos/zephyr#80362

Signed-off-by: Gerard Marull-Paretas <[email protected]>
(cherry picked from commit da385a518ec3dc4b87fafd07cd05f899d376dc18)

Author: gmarull

include/zephyr/bluetooth/audio/bap.h

@@ -640,13 +640,13 @@ struct bt_bap_unicast_server_register_param {
 	/**
 	 * @brief Sink Count to register.
 	 *
-	 * Should be in range [0, @kconfig{CONFIG_BT_ASCS_MAX_ASE_SNK_COUNT}]
+	 * Should be in range 0 to @kconfig{CONFIG_BT_ASCS_MAX_ASE_SNK_COUNT}
 	 */
 	uint8_t snk_cnt;
 
 	/** @brief Source Count to register.
 	 *
-	 * Should be in range [0, @kconfig{CONFIG_BT_ASCS_MAX_ASE_SRC_COUNT}]
+	 * Should be in range 0 to @kconfig{CONFIG_BT_ASCS_MAX_ASE_SRC_COUNT}
 	 */
 	uint8_t src_cnt;
 };