Update README.md with logo

Author: coco98

README.md

@@ -1,10 +1,13 @@
-# Supergraph.io website
+# supergraph.io
+
+<img src="https://github.com/hasura/supergraph-io/assets/131160/ed85fa72-9cf0-4dd9-ad6a-7b1dde4c1616" width=100 />
+
 
 Rendered at: [supergraph.io](https://supergraph.io)
 
 ## Contributing
 
-This site uses Hugo with the Hugo Book Theme.
+This site uses [Hugo](https://gohugo.io/) with the [Hugo Book Theme](https://github.com/alex-shpak/hugo-book).
 
 #### Local development