Update docs for CONFIG SET and CONFIG GET

[Yury-Fridlyand]

Describe the feature

Prior to Version 7.0.0, we can only send one parameter.
We need to update docs and tests for all clients

Use Case

-

Proposed Solution

No response

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

Client version used

1.0

Environment details (OS name and version, etc.)

N/A

[asafpamzn]

@Yury-Fridlyand , these are server docs, why do we need to document at the client?

[Yury-Fridlyand]

We reflect all command docs in our clients.

[asafpamzn]

@yipin-chen please see if you can take it

[yipin-chen]

PR #2919 has been merged.