feat: Update to API references look and feel (#343)

Co-authored-by: Vadim Smirnov <smirnou.vadzim@gmail.com>
Co-authored-by: zakariasaad <zakaria.elas@gmail.com>
Co-authored-by: Vilfred Sikker <vilfredsikker@gmail.com>
Co-authored-by: olivermrbl <oliver@mrbltech.com>

docs/pages/index-page.md

@@ -0,0 +1,8 @@
+---
+templateKey: index-page
+pageTitle: Medusa docs
+introTtitle: Documentation
+introSubtitle: Explore and learn how to use Medusa.
+introDescriptionTitle: Quickstart
+introDescriptionSubtitle: Get up and running within 5 minutes, with helpful starters that lay the foundation for growth.
+---