Fix rust example query.rs in docs

[SF-Zhou]

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7 out of 13 committers have signed the CLA.

:white_check_mark: hjxilinx
:white_check_mark: DuanKuanJun
:white_check_mark: LiShunGang
:white_check_mark: hzcheng
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:x: “happyguoxy”
:x: huskar-t
:x: gccgdb1234
:x: SF-Zhou
:x: wangjiaming0909
:x: cadem

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[guanshengliang]

很久没有看 github 仓库，今天注意到您的这个 PR。 由于时间较长，这段时间的分支变化导致出现了代码冲突。我 cherry pick 也没办法解决冲突，所以我把这个 PR 关闭了。