docs: mapbox token

[changchiyou]

https://github.com/yihong0618/running_page/issues/643#issuecomment-2042675730

@yihong0618 @orionna319 看起來確實如 https://github.com/yihong0618/running_page/issues/643#issuecomment-2041976662 所說不用重構專案，但需要根據 https://github.com/yihong0618/running_page/issues/643#issuecomment-2042668580 更新README.md / 於src/utils/const.ts對應位置上新添加提示 command

只有添加 comment，沒有動README.md/README-CN.md（因為兩個README.md本來就不一致，不好更新）

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Name	Status	Preview	Comments	Updated (UTC)
running-page	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 8, 2024 3:58pm

[yihong0618]

thanks