docs: fixes in shipping, payment, and other documentations

* added integration

* add segment for API reference

* updated frontend checkout flow

* added paypal documentation

* Improve storefront quickstart documents

* added documentation for entities

* docs: disable running tests for docs

* added docs contribution guidelines

* Use npm2yarn where missing

* added additional steps section

* added notification overview

* Added guidelines for sidebar labels

* added how to create notification provider

* fixes

* fixes for payment provider

* fixes

* chore(deps): bump sqlite3 from 5.0.2 to 5.0.3 (#1453)

Bumps [sqlite3](https://github.com/TryGhost/node-sqlite3) from 5.0.2 to 5.0.3.
- [Release notes](https://github.com/TryGhost/node-sqlite3/releases)
- [Changelog](https://github.com/TryGhost/node-sqlite3/blob/master/CHANGELOG.md)
- [Commits](https://github.com/TryGhost/node-sqlite3/compare/v5.0.2...v5.0.3)

* fix: Issue with cache in CI pipeline

* Use npm2yarn where missing

* added integration

* add segment for API reference

* fix double segment

* updated frontend checkout flow

* added documentation for entities

* added docs contribution guidelines

* Added guidelines for sidebar labels

* added additional steps section

* added notification overview

* added how to create notification provider

* chore: Add issue template for bug reports (#1676)

* chore: Add issue template for feature requests (#1679)

* fixes

* fixes for payment provider

* fixes

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>

docs/content/advanced/backend/payment/how-to-create-payment-provider.md

@@ -70,7 +70,7 @@ Following the naming convention of Services, the name of the file should be the
 
 As mentioned in the overview, Payment Providers should have a static `identifier` property.
 
-The `PaymentProvider` model has 2 properties: `identifier` and `is_installed`. The value of the `identifier` property in the class will be used when the Payment Provider is created in the database.
+The `PaymentProvider` entity has 2 properties: `identifier` and `is_installed`. The value of the `identifier` property in the class will be used when the Payment Provider is created in the database.
 
 The value of this property will also be used to reference the Payment Provider throughout the Medusa server. For example, the identifier is used when a [Payment Session in a cart is selected on checkout](https://docs.medusajs.com/api/store/cart/select-a-payment-session).