Replace llm variable with model (#23280)
The code snippet under ‘pdfs_qa’ contains an small incorrect code
example , resulting in users getting errors. This pr replaces ‘llm’
variable with ‘model’ to help user avoid a NameError message.
Resolves #22689
If no one reviews your PR within a few days, please @-mention one of
baskaryan, efriis, eyurtsev, ccurme, vbarda, hwchase17.
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Co-authored-by: Chester Curme <chester.curme@gmail.com>
