doc: bluetooth: autopts: Fix internal linking

Links/references to the pages internal to the documentation should
use `:ref:`.

Signed-off-by: Stephanos Ioannidis <[email protected]>

Author: stephanosio

doc/connectivity/bluetooth/autopts/autopts-linux.rst

@@ -20,8 +20,7 @@ Supported methods to test zephyr bluetooth host:
 
 - Testing Zephyr combined (controller + host) build on Real hardware (such as nRF52)
 
-For running with QEMU or native posix, please visit:
-   https://docs.zephyrproject.org/latest/guides/bluetooth/bluetooth-tools.html?highlight=hci_uart#running-on-qemu-and-native-posix
+For running with QEMU or native posix, see :ref:`bluetooth_qemu_posix`.
 
 Setup Linux
 ===========================