fix: settings padding for section title

[edwinzhng]

Description

• It looks like the section title is missing padding that is currently applied to section content, so all of the titles are misaligned
• I also increased column width of the title so that "Enable Signed Approvals" can fit on a single line

Related Issue

Fixes #640

Motivation and Context

Improves section title spacing

How Has This Been Tested?

Manually tested

Screenshots (if appropriate):

Before:

After:

[aws-amplify-us-east-1[bot]]

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