message: Update components list
diff: @@ -17,12 +17,20 @@ The following components are available as part of checkout UI extensions, but ma
  - [FormLayout and FormLayoutGroup](../src/components/FormLayout)
  - [Heading](../src/components/Heading)
  - [HeadingGroup](../src/components/HeadingGroup)
  +- [Icon](../src/components/Icon)
  - [Image](../src/components/Image)
  - [InlineSpacer](../src/components/InlineSpacer)
  - [InlineStack](../src/components/InlineStack)
  - [Layout](../src/components/Layout)
  - [Link](../src/components/Link)
  +- [List](../src/components/List)
  +- [PhoneField](../src/components/PhoneField)
  - [Select](../src/components/Select)
  +- [SkeletonImage](../src/components/SkeletonImage)
  +- [SkeletonText](../src/components/SkeletonText)
  +- [SkeletonTextBlock](../src/components/SkeletonTextBlock)
  +- [Spinner](../src/components/Spinner)
  +- [Stepper](../src/components/Stepper)
  - [Text](../src/components/Text)
  - [TextBlock](../src/components/TextBlock)
  - [TextContainer](../src/components/TextContainer)
  