convert_hf_to_gguf: fix typo

[stevegrubb]

Add missing underscore to a layer_norm_epsilon parameter.

[ngxson]

This is not a typo. Ref: https://huggingface.co/bigcode/octogeex/blob/main/config.json#L26

[stevegrubb]

OK. That seems familiar (I saw this about a year ago and was rechecking this). But then I see layer_norm_epsilon everywhere else in the file. Out of curiosity, why isn't this consistent? I'd like to leave a note explaining this if everything is correct. Thx.

[ngxson]

Can you point out the line with layer_norm_epsilon?

After changing, have you test it? We can't accept a PR without knowing it of work.

[stevegrubb]

Yes, I have used an updated program to convert from a huggingface repo to a gguf file. I haven't observed any problems, but maybe the model didn't have this in it? Some examples where it has the extra underscore are lines: 246, 1021, 1362, etc. There are 18 occurrences. With 18 places where it is different, it is easy to conclude the one I changed is a typo and should be in sync with the others.

[ngxson]

I can't find any pass issue about this, so it's better not to assume that this is typo.

If it still works, better not to touch it.