C3: Improve cron/scheduled template docs

[connorads]

What this PR solves / how to test

First time starting to do a scheduled worker locally so I use the template: get all obscure warnings and error messages as per #4720. Really not intuitive to the uninitiated. This doesn't solve that issue completely but should hopefully help.

https://developers.cloudflare.com/workers/runtime-apis/handlers/scheduled/

Fixes #4720, #4560

Author has addressed the following

• Tests
  • TODO (before merge)
  • Included
  • Not necessary because: changing template docs
• Changeset (Changeset guidelines)
  • TODO (before merge)
  • Included
  • Not necessary because: trivial change
• Public documentation
  • TODO (before merge)
  • Cloudflare docs PR(s): https://github.com/cloudflare/cloudflare-docs/pull/...
  • Not necessary because: changing template docs

[changeset-bot]

🦋 Changeset detected

Latest commit: bc11264

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
create-cloudflare	Patch

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[jculvey]

LGTM. Thanks for the fix!

[github-actions]

A wrangler prerelease is available for testing. You can install this latest build in your project with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/9097994504/npm-package-wrangler-5547

You can reference the automatically updated head of this PR with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/prs/5547/npm-package-wrangler-5547

Or you can use npx with this latest build directly:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/9097994504/npm-package-wrangler-5547 dev path/to/script.js

Additional artifacts:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/9097994504/npm-package-create-cloudflare-5547 --no-auto-update

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/9097994504/npm-package-cloudflare-kv-asset-handler-5547

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/9097994504/npm-package-miniflare-5547

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/9097994504/npm-package-cloudflare-pages-shared-5547

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/9097994504/npm-package-cloudflare-vitest-pool-workers-5547

Note that these links will no longer work once the GitHub Actions artifact expires.

---

wrangler@3.56.0 includes the following runtime dependencies:

Package	Constraint	Resolved
miniflare	workspace:*	3.20240512.0
workerd	1.20240512.0	1.20240512.0
workerd --version	1.20240512.0	2024-05-12

Please ensure constraints are pinned, and miniflare/workerd minor versions match.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.42%. Comparing base (2789f26) to head (96e04ce).
Report is 119 commits behind head on main.

❗ Current head 96e04ce differs from pull request most recent head bc11264. Consider uploading reports for the commit bc11264 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5547      +/-   ##
==========================================
- Coverage   72.44%   72.42%   -0.03%     
==========================================
  Files         331      331              
  Lines       17298    17298              
  Branches     4422     4422              
==========================================
- Hits        12532    12528       -4     
- Misses       4766     4770       +4     

see 2 files with indirect coverage changes