fix(docs): Pin Zephyr docs links to a version

Co-authored-by: Cem Aksoylar <caksoylar@users.noreply.github.com>

docs/docs/development/build-flash.md

@@ -143,7 +143,7 @@ west flash
 
 ## Multi-CPU and Dual-Chip Bluetooth Boards
 
-Zephyr supports running the Bluetooth host and controller on separate processors. In such a configuration, ZMK always runs on the host processor, but you may need to build and flash separate firmware for the controller. Zephyr provides sample code which can be used as the controller firmware for Bluetooth HCI over [RPMsg](https://docs.zephyrproject.org/latest/samples/bluetooth/hci_rpmsg/README.html), [SPI](https://docs.zephyrproject.org/latest/samples/bluetooth/hci_spi/README.html), [UART](https://docs.zephyrproject.org/latest/samples/bluetooth/hci_uart/README.html), and [USB](https://docs.zephyrproject.org/latest/samples/bluetooth/hci_usb/README.html). See [Zephyr's Bluetooth Stack Architecture documentation](https://docs.zephyrproject.org/latest/connectivity/bluetooth/bluetooth-arch.html) for more details.
+Zephyr supports running the Bluetooth host and controller on separate processors. In such a configuration, ZMK always runs on the host processor, but you may need to build and flash separate firmware for the controller. Zephyr provides sample code which can be used as the controller firmware for Bluetooth HCI over [RPMsg](https://docs.zephyrproject.org/3.2.0/samples/bluetooth/hci_rpmsg/README.html), [SPI](https://docs.zephyrproject.org/3.2.0/samples/bluetooth/hci_spi/README.html), [UART](https://docs.zephyrproject.org/3.2.0/samples/bluetooth/hci_uart/README.html), and [USB](https://docs.zephyrproject.org/3.2.0/samples/bluetooth/hci_usb/README.html). See [Zephyr's Bluetooth Stack Architecture documentation](https://docs.zephyrproject.org/3.2.0/connectivity/bluetooth/bluetooth-arch.html) for more details.
 
 The following documentation shows how to build and flash ZMK for boards that use a dual-chip configuration.