🚀 Feature: Update from sentences-per-line to markdownlint-sentences-per-line

[JoshuaKGoldberg]

Feature Request Checklist

• I have pulled the latest main branch of the repository.
• I have searched for related issues and found none that matched my issue.

Overview

Over in JoshuaKGoldberg/sentences-per-line#787, I renamed the sentences-per-line Markdownlint plugin to the more explicit markdownlint-sentences-per-line. This issue tracks create-typescript-app using the new name.

Additional Info

This issue is the first step to overhaul CTA's Markdown linting:

1. (this issue)
2. 🚀 Feature: Use @eslint/markdown instead of markdownlint #1926
3. 🚀 Feature: Move sentences-per-line into the formatter, Prettier #2216

[github-actions]

🎉 This is included in version v2.48.0 🎉

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀