修改clone地址到/PaddleOCR，避免后续命令执行失败

[jackeylu]

fixed #663 issue.

[CLAassistant]

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2 out of 3 committers have signed the CLA.

:white_check_mark: tink2123
:white_check_mark: jackeylu
:x: jackeylv

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[MissPenguin]

@tangmq 辛苦帮忙check 下？

[tangmq]

已修复问题