[Fix] UI Consistency - Cards Alignment Issue

[yimingc2]

Resolved #325

Abstract

This PR will fix the issue of broken constraints on reusable card section widget.

Changes

• Changed the padding around the title to be margins
• Fixed the typo in README
• Offset the title left margin to be aligned with the card

Screenshots

[lukesleeman]

Since this has sat here for a day, and since I've tested this out, and it all looks good, I'm going to merge 🙂