docs: added a feedback component in quickstart guides (#2894)

* docs: added a feedback component in quickstart guides

* docs: added feedback to admin docs

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

@@ -428,7 +428,7 @@ This method returns an array of saved payment methods retrieved from the third-p
 
 :::note
 
-If you’re using Medusa’s [Next.js](../../../starters/nextjs-medusa-starter.md) or [Gatsby](../../../starters/gatsby-medusa-starter.md) storefront starters, note that the presentation of this method is not implemented. You’ll need to implement the UI and pages for this method based on your implementation and the provider you are using.
+If you’re using Medusa’s [Next.js](../../../starters/nextjs-medusa-starter.mdx) or [Gatsby](../../../starters/gatsby-medusa-starter.mdx) storefront starters, note that the presentation of this method is not implemented. You’ll need to implement the UI and pages for this method based on your implementation and the provider you are using.
 
 :::
 

docs/content/advanced/backend/payment/overview.md

@@ -30,7 +30,7 @@ As a developer, you will mainly work with the Payment Provider when integrating
 
 When you run your Medusa server, the Payment Provider will be registered on your server if it hasn’t been already.
 
-Once the Payment Provider is added to the server, the store operator will be able to choose on the [Medusa Admin](../../../admin/quickstart.md) the payment providers available in a region. These payment providers are shown to the customer at checkout to choose from and use.
+Once the Payment Provider is added to the server, the store operator will be able to choose on the [Medusa Admin](../../../admin/quickstart.mdx) the payment providers available in a region. These payment providers are shown to the customer at checkout to choose from and use.
 
 :::caution