Update titles, descriptions, and slugs based on ercule feedback

[melindafekete]

Add redirect

About the changes

This PR updates a couple of titles, descriptions, and a slug as per the following suggestions from Ercule.

Affected pages:

• Welcome page -> new description, title changed to 'Unleash Documentation'. I also removed it from the left-hand navigation (since it's confusing to have Unleash Documentation as a nav item inside Unleash documentation. plus you can always navigate back to it by using the home button in the breadcrumb)
• How to create a feature flag -> new description, new slug, links updated, redirects in place.
• How to implement feature flags in serverless -> new title, new description
• Best practices for using feature flags at scale -> new description

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
unleash-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 23, 2024 11:44am
unleash-monorepo-frontend	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 23, 2024 11:44am

[vercel]

Deployment failed with the following error:

Could not parse File as JSON: website/vercel.json

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details

Scanned Manifest Files

[nnennandukwe]

LGTM 🚀