Resolve #3492105 "Missing steps in"

Closes #3492105

CONTRIBUTING.md

 # See it in action + recommended development environment
-1. Drupal 11 (preferably a clone for Git archeology: `git clone https://git.drupalcode.org/project/drupal.git` — 10.3 will work too).
-2. Add `$settings['extension_discovery_scan_tests'] = TRUE;` to the end of the `sites/default/settings.php` file (this allows the `xb_dev_standard` hidden module to be installed).
-3. `composer require drush/drush`
-4. `drush si standard`
-5. `drush pm:install experience_builder xb_dev_standard`
-6. Build the front end: `cd modules/contrib/experience_builder/ui` and then either
+1. Drupal 11 (preferably a clone for Git archeology: `git clone https://git.drupalcode.org/project/drupal.git` — 10.4 will work too).
+2. `cd drupal && git clone git@git.drupal.org:project/experience_builder.git modules/contrib/experience_builder`
+4. `composer require drush/drush`
+5. `vendor/bin/drush si standard`
+4. Add `$settings['extension_discovery_scan_tests'] = TRUE;` to the end of the `sites/default/settings.php` file (this allows the `xb_dev_standard` hidden module to be installed).
+6. `vendor/bin/drush pm:install experience_builder xb_dev_standard`
+7.  Build the front end: `cd modules/contrib/experience_builder/ui` and then either
     * With Node.js available: `npm install && npm run build`
     * With Docker available: `docker build --output dist .`
-7. Browse to `/node/add/article` just enter a title for the article and hit save. This will create a node with an empty canvas for the field `field_xb_demo`.
-8. In the toolbar, click "Experience Builder"! 🥳
-9. If you're curious: look at the code, step through it with a debugger, and join us!
-10. If you want to run *all* tests locally, including the OpenAPI spec one: `composer require league/openapi-psr7-validator webflo/drupal-finder devizzent/cebe-php-openapi --dev`
+8.  Browse to `/node/add/article` just enter a title for the article and hit save. This will create a node with an empty canvas for the field `field_xb_demo`.
+9.  In the toolbar, click "Experience Builder"! 🥳
+10. If you're curious: look at the code, step through it with a debugger, and join us!
+11. If you want to run *all* tests locally, including the OpenAPI spec one: `composer require league/openapi-psr7-validator webflo/drupal-finder devizzent/cebe-php-openapi --dev`
 
 # During development
 The following commands assume the recommended development details outlined above, particularly the location of the `vendor` directory. If your `vendor` directory is not adjacent to your `index.php` — if you created your environment using [`drupal/recommended-project`](https://packagist.org/packages/drupal/recommended-project), for example — you will need to adjust the command path (i.e., `../vendor` instead of `vendor`). If you are using our DDEV add-on ([`TravisCarden/ddev-drupal-xb-dev`](https://github.com/TravisCarden/ddev-drupal-xb-dev)), convenience commands are provided.