chore: Updated README.

[GEYUANwuqi]

修改了readme中的表述错误

Summary by Sourcery

Documentation:

• Clarify the description of the input and output video paths in both the English and Chinese versions of the README.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request corrects a wording error in the README files, clarifying the description of the input and output video paths for the -i and -o command-line arguments.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Clarified the description of the input video path argument.	Changed the description of the -i input argument from "input video path (absolute path of output video)" to "input video path (absolute path of input video)".	README.md
Clarified the description of the output video path argument.	Changed the description of the -o output argument from "输出视频的绝对路径(例: E:/input.mp4)" to "输出视频的绝对路径(例: E:/output.mp4)".	README_CN.md

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[sourcery-ai]

Hey @GEYUANwuqi - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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