Fix problem in get_openr1_dataset.py in chord example

[garyzhang99]

Description

Minor fix, as the title says.

Checklist

Please check the following items before code is ready to be reviewed.

• Code has passed all tests
• Docstrings have been added/updated in Google Style
• Documentation has been updated
• Code is ready for review

[gemini-code-assist]

Summary of Changes

Hello @garyzhang99, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a minor issue in the 'get_openr1_data.py' script by refining the logic for identifying Chinese characters. The change improves the accuracy or efficiency of the character detection function by removing a specific Unicode range check that was either redundant or incorrectly applied.

Highlights

• Unicode Character Check Refinement: The pull request removes an unnecessary or incorrect Unicode character range check (U+20000 to U+2A6DF) from the 'contains_chinese' function in 'get_openr1_data.py'.

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[gemini-code-assist]

Code Review

This pull request fixes a bug in the contains_chinese function by removing a condition that used an invalid Unicode escape sequence. My review includes a suggestion to refactor the remaining function for conciseness and improved readability.