replace wrangler generate in quickstarts/examples

content/workers/get-started/guide.md

content/workers/get-started/quickstarts.md

content/workers/learning/profiling-workers.md

content/workers/learning/using-durable-objects.md

content/workers/platform/sites/configuration.md

content/workers/platform/sites/start-from-scratch.md

layouts/shortcodes/worker-starter.html