feat: dragon q6a boot order

Author: EESN-W

i18n/en/docusaurus-plugin-content-docs/current/dragon/q6a/download.md

@@ -39,7 +39,7 @@ For detailed steps on flashing the SPI boot firmware, please refer to the [Flash
 :::tip Firmware update description
 
 1. Support eMMC boot
-2. Add default boot device order: USB > SD > NVMe > eMMC > UFS > USB
+2. Add default boot device order: USB > SD > NVMe > eMMC > UFS
 3. Add boot device selection
 4. Accelerate boot speed