Documentation is outdated for `google-cloud-speech`

[parthea]

This is a copy of https://github.com/googleapis/google-cloud-python/issues/11856 which is requesting updated snippets for google-cloud-speech.

[terasato]

Related: https://issuetracker.google.com/issues/362409028 Related: https://stackoverflow.com/questions/77132012/google-speech-to-text-api-5-minute-limit

[terasato]

This issue seems to be a duplicate of #12053