[UI components]: 2023-07 Docs patch

[oliverigor]

Background

• Bringing some checkout docs changes to previous versions

Solution

• Adding StyleHelper docs changes.
• Adding scrollTo clarification on docs.
• Adding Image source docs changes.

🎩

• https://shopify-dev.checkout-web-api-docs-z7ub.igor-deoliveiramartins.us.spin.dev/

Checklist

• [x] I have :tophat:'d these changes
• [x] I have updated relevant documentation