Language. repr returns incorrect string format

Language. repr returns incorrect string format: a task in harbor-swesmith-rl-artifacts: Harbor SWE-Smith 强化学习数据产物 (Harbor dataset). I found an issue with the repr method in the Language class. The current implementation returns a string in a different format than expected.

The task

I found an issue with the `__repr__` method in the `Language` class. The current implementation returns a string in a different format than expected.

Part of keryszhan/harbor-swesmith-rl-artifacts.