Fix erroneous format string in ZeroShotClassifier

[alewarne]

This erroneous format string prevents the ZeroShot classifier from working because input/output/expected are not inserted into the prompt.

[freddiev4]

Thanks for catching this! Also curious @alewarne what you’re using judges for ?

[alewarne]

@freddiev4 I just want to play around a bit with the concept of LLM-as-a-judge and found this repo super helpful :)

[freddiev4]

@freddiev4 I just want to play around a bit with the concept of LLM-as-a-judge and found this repo super helpful :)

That's great to hear! Anything else you'd like to see improved / added?

I'm looking into #19 again later today and hope to cut a new release to reduce those issues