fix: remove hero actions with invalid links from homepage

The hero actions duplicated the LinkCard components below and used links
that the Starlight validator couldn't resolve. Removed since LinkCards
provide the same functionality and work correctly.

Author: bdenham

src/content/docs/index.mdx

@@ -10,15 +10,6 @@ hero:
     dark: ../../assets/widgets-dark.webp
     light: ../../assets/widgets-light.webp
     alt: Adobe Commerce Storefront
-  actions:
-    - text: Storefront DEVELOPERS
-      link: /get-started/
-      aria-label: Storefront Developers
-      variant: primary
-    - text: Storefront AUTHORS
-      link: /merchants/storefront-builder/
-      aria-label: Storefront Authors
-      variant: minimal
 # banner:
 #   content: |
 #     Currently in alpha status under active development. If you have any questions, please visit our href="https://discord.gg/xxVR2R3rRn"> Edge Delivery Discord server</a>.