docs: change changelog paginator label

[Josh-Cena]

Motivation

POC for #7250. It's also been something I wanted to do.

cc @wgruszczyk

Have you read the Contributing Guidelines on pull requests?

Yes

[netlify]

✅ [V2]

Name	Link
🔨 Latest commit	49cc802
🔍 Latest deploy log	https://app.netlify.com/sites/docusaurus-2/deploys/626947d41718c30009ec4d76
😎 Deploy Preview	https://deploy-preview-7251--docusaurus-2.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[github-actions]

⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟠 Performance	59
🟢 Accessibility	100
🟠 Best practices	83
🟢 SEO	100
🟢 PWA	90

Lighthouse ran on https://deploy-preview-7251--docusaurus-2.netlify.app/

[github-actions]

Size Change: +2 B (0%)

Total Size: 803 kB

ℹ️ View Unchanged

Filename	Size	Change
website/.docusaurus/globalData.json	50.1 kB	0 B
website/build/assets/css/styles.********.css	107 kB	0 B
website/build/assets/js/main.********.js	607 kB	+2 B (0%)
website/build/index.html	38.8 kB	0 B

_{compressed-size-action}