[Sync EN] Tutorial: Improved "What's Next" section (#5491)

[github-actions]

Commit: https://github.com/php/doc-en/commit/1340d3595bde8489ea1385868ffd75471a56999b
PR: https://github.com/php/doc-en/pull/5491

Fichiers FR à mettre à jour

• chapters/tutorial.xml