docs: radxa c200 update hardware and pre-build bios firmware

[EESN-W]

PR 说明

• 更新硬件资料下载链接
• 增加 40 Pin / 12 Pin GPIO 接口
• 增加烧录预编译 BIOS 固件的方式

[windsurf-bot]

Other comments (3)

• i18n/en/docusaurus-plugin-content-docs/current/som/nx/orin-nx/c200-orin/hardware-use/pin-gpio.md (21-25) Consider adding pinout tables that describe the function of each pin on both the 40-pin and 12-pin GPIO headers. This would make the documentation more self-contained and useful for developers working with these interfaces.
• i18n/en/docusaurus-plugin-content-docs/current/som/nx/orin-nx/c200-orin/hardware-use/pin-gpio.md (7-7) The introduction mentions a CAN bus interface, but there's no dedicated section with details about this interface. Consider adding specific information about the CAN bus connector location, pinout, and usage instructions.
• i18n/en/docusaurus-plugin-content-docs/current/som/nx/orin-nx/c200-orin/hardware-use/pin-gpio.md (27-27) The 'Other GPIO Headers' section title is ambiguous. Consider renaming it to be more specific about what's shown in the image (e.g., '12-Pin GPIO and CAN Bus Headers') and add brief descriptions for each header shown.

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