Some `chalk help configs` output should not be center-aligned

## Description

Chalk may output a table with a green title, which is center-aligned.

However, for `chalk help configs`, there is information under the table titles, which is also center-aligned. I think it should be left-aligned like the other body text.

## Impact

Low impact: some text in `chalk help configs` looks a bit inconsistent and less readable.

## Steps to Reproduce

Run `chalk help configs` with chalk v0.3.1.

## Other Information


Run `chalk help configs` with chalk v0.3.1 and compare the alignment of the information beneath the table titles with the other body text. Locate the implementation that formats this command's output and make the affected text left-aligned while preserving the centered green titles; verify the command no longer shows inconsistent alignment.

Written by the indexing model from the issue text.