Cleanup commands/config.go

What does this MR do?

Cleanups a little the commands/config.go file.

Why was this MR needed?

Just a simple cleanup of things found during work on #4407 (closed).

Are there points in the code the reviewer needs to double check?

Does this MR meet the acceptance criteria?

• Documentation created/updated
• Added tests for this feature/bug
• In case of conflicts with master - branch was rebased

What are the relevant issue numbers?

Related to #4407 (closed)