Add aliases for reference hardware

content/reference_hardware/hardware/amd64.md

content/reference_hardware/hardware/arm32.md

content/reference_hardware/hardware/arm64.md

content/reference_hardware/hardware/extras.md

.../reference_hardware/setup_guides/imx6q_sabrelite_setup.md

...rence_hardware/setup_guides/imx8mn_bsh_smm_s2pro_setup.md

...erence_hardware/setup_guides/imx8mn_var_symphony_setup.md

content/reference_hardware/setup_guides/minnowboard_setup.md

content/reference_hardware/setup_guides/rcar-gen3_setup.md

content/reference_hardware/setup_guides/rpi4_setup.md

...t/reference_hardware/setup_guides/rpi_cm4_canopi_setup.md

content/reference_hardware/setup_guides/sk-am62_setup.md

...nt/reference_hardware/setup_guides/upsquared6000_setup.md

..._hardware/setup_lava_guides/imx6q_sabrelite_setup_lava.md

...t/reference_hardware/setup_lava_guides/rpi4_setup_lava.md

...ce_hardware/setup_lava_guides/upsquared6000_setup_lava.md