Improve documentation and examples for synchronous invocation of long-running lambda functions

[kdaily]

Is your feature request related to a problem? Please describe.

Synchronous invocation of long-running lambda functions can be retried under default CLI parameters without the user being aware. This was raised in issue #2657.

Describe the solution you'd like

Improve documentation around this behavior to make it clear what a user would need to do to prevent this from happening.

Describe alternatives you've considered

Reviewed existing documentation and could not find a clear, concise description of this scenario.

Additional context

None

[cmoralesmx]

Hello, this seems like a good small issue to get myself involved with the project. I'll start working on this as it seems to be available

[github-actions]

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[cmoralesmx]

Hi, sorry, life got in the way and this went under my radar for a while. I've now opened a pull request for this in the docs repo.
This is my first contribution in anything AWS CLI related, I hope my commit fully addresses this issue