Docs: Several typos and inconsistencies in the Parameters docs

[KeltonKarboviak]

What were you searching in the docs?

I was looking over the Parameters documentation to test out the feature.

Is this related to an existing documentation section?

https://awslabs.github.io/aws-lambda-powertools-python/2.7.0/utilities/parameters/

How can we improve?

Fix the typos and inconsistencies.

Got a suggestion in mind?

No response

Acknowledgment

• I understand the final update might be different from my proposed suggestion, or refused.

[boring-cyborg]

Thanks for opening your first issue here! We'll come back to you as soon as we can.
In the meantime, check out the #python channel on our AWS Lambda Powertools Discord: Invite link

[github-actions]

This is now released under 2.9.1 version!