TranscriptionConfig custom spellings property raises error fetching valid custom spelling config

[danieljnchen]

TranscriptionConfig.set_custom_spelling sets the raw transcription config's from to a list, but TranscriptionConfig.custom_spelling property raises an error if from is not a string.

>>> import assemblyai as aai
>>> tc = aai.TranscriptionConfig(custom_spelling={"a": ["b", "c"]})
>>> tc.custom_spelling
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/danielchen/.local/share/virtualenvs/transcribe_audio-AdYllNfC/lib/python3.11/site-packages/assemblyai/types.py", line 930, in custom_spelling
    raise ValueError("`from` argument must be a string!")
ValueError: `from` argument must be a string!

[ploeber]

Thanks for reporting! I'll create a fix for the next version