BUG in Python Sigv4 code

[beqqrry-aws]

What is the issue?

https://docs.aws.amazon.com/en_us/code-samples/latest/catalog/python-signv4-v4-signing-get-querystring.py.html

There's a bug in the code. In line

request_url = endpoint + "?" + canonical_querystring

should be

request_url = endpoint + canonical_uri + "?" + canonical_querystring

Any other related details we should know about?

Reported from SIM.

[beqqrry-aws]

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