The relative path of the test data is incorrect

[Ziy1-Tan]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

• Errors occurred while following the testing process: https://github.com/apache/arrow-rs/blob/main/CONTRIBUTING.md#git-submodules

Describe the solution you'd like

• Change the ../ to ./

Describe alternatives you've considered

Additional context

[alamb]

label_issue.py automatically added labels {'documentation'} from #7221