Sync various fixes already applied on u.com (#776)

[evilnick]

• etcd updates

• fix local nav

• remove \n

• update updates for 1.23 and 1.24 also

• clarification on etcd version

• various link/style fixes

[netlify[bot]]

👷 Deploy Preview for cdk-docs processing.

Name	Link
🔨 Latest commit	6fd1ced5d06cfc128d1ddd0d694d4573cc9cb61e
🔍 Latest deploy log	https://app.netlify.com/sites/cdk-docs/deploys/647e09f56d3d7e000837a935

[netlify[bot]]

✅ Deploy Preview for cdk-next ready!

Name	Link
🔨 Latest commit	6fd1ced5d06cfc128d1ddd0d694d4573cc9cb61e
🔍 Latest deploy log	https://app.netlify.com/sites/cdk-next/deploys/647e09f5f950d300083fcbe5
😎 Deploy Preview	https://deploy-preview-777--cdk-next.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.