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>

www/reference/src/components/icons/github.js

@@ -0,0 +1,18 @@
+import { Image } from "@theme-ui/components"
+import React from "react"
+
+import Logo from "../../assets/github.svg"
+
+const GitHub = () => {
+  return (
+    <Image
+      src={Logo}
+      sx={{
+        height: "20px",
+        fill: "#000",
+      }}
+    />
+  )
+}
+
+export default GitHub