[azure-cognitiveservices-knowledge-qnamaker]Fix name qn_amakaer

• Package Name: azure-cognitiveservices-knowledge-qnamaker
  https://docs.microsoft.com/en-us/python/api/azure-cognitiveservices-knowledge-qnamaker/azure.cognitiveservices.knowledge.qnamaker.runtime?view=azure-python

Rename qn_amakaer to qna_maker

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @bingisbestest, @nerajput1607.

[lmazuel]

Closing since the problem disapeared with recent versions