Update task list documentation and example

[chihsuan]

Submission Review Guidelines:

• I have followed the WooCommerce Contributing Guidelines and the WordPress Coding Standards.
• I have checked to ensure there aren't other open Pull Requests for the same update/change.
• I have reviewed my code for security best practices.
• Following the above guidelines will result in quick merges and clear and detailed feedback when appropriate.

Changes proposed in this Pull Request:

Closes #35234.

This PR updates the task list documentation and example of "add task".

How to test the changes in this Pull Request:

Using the WooCommerce Testing Instructions Guide, include your detailed testing instructions:

1. Review the changes onboarding-tasks.md
2. Run WC_EXT=add-task pnpm --filter=woocommerce/client/admin example
3. Include ./woocommerce/plugins/add-task in your .wp-env.json or .wp-env.override.json and restart the WordPress instance
4. Go to WooCommerce > Home
5. Observe that "My Task" is shown in set up task list.

[github-actions]

Test Results Summary

Commit SHA: 2e85c9d

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	267	0	0	2	0	269	1m 15s
E2E Tests	189	0	0	10	0	199	16m 20s

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To view the full API test report, click here.
To view the full E2E test report, click here.
To view all test reports, visit the WooCommerce Test Reports Dashboard.

[github-actions]

Hi @ilyasfoo, @rjchow, @woocommerce/ghidorah

Apart from reviewing the code changes, please make sure to review the testing instructions as well.

You can follow this guide to find out what good testing instructions should look like:
https://github.com/woocommerce/woocommerce/wiki/Writing-high-quality-testing-instructions

[ilyasfoo]

Thanks for updating the docs, @chihsuan!

I wasn't able to run WC_EXT=add-task --filter=woocommerce/client/admin pnpm example from the base repo folder. I've already run pnpm install.

[chihsuan]

Thanks for updating the docs, @chihsuan!

I wasn't able to run WC_EXT=add-task --filter=woocommerce/client/admin pnpm example from the base repo folder. I've already run pnpm install.

Sorry @ilyasfoo, could you please try again using WC_EXT=add-task pnpm --filter=woocommerce/client/admin example? I've also fixed the command in readme in f77467d.

[moon0326]

Thank you for working on this!

It worked well with your revised comment 🚀

[ilyasfoo]

Awesome, thanks @chihsuan!

I have minor comments, some comments are co-authored by ChatGPT:

[ilyasfoo]

What do you say if we annotate this image?

[chihsuan]

Awesome, thanks @chihsuan!

I have minor comments, some comments are co-authored by ChatGPT:

Thanks @ilyasfoo Updated as suggested. 😊

[ilyasfoo]

Awesome, LGTM! 🚢

[chihsuan]

It seems like e2e tests are failing but unrelated to this PR. Wait for #38321.