Update README with link to Dev Setup page (#6669)

Signed-off-by: svrnm <[email protected]>
Co-authored-by: Tiffany Hrabusa <[email protected]>
Co-authored-by: svrnm <[email protected]>

Author: 3 people

README.md

@@ -29,8 +29,10 @@ to the registry][].
 
 ## Contributing
 
-See the [Contributing](https://opentelemetry.io/docs/contributing) page on our
-docs.
+See the [Contributing](https://opentelemetry.io/docs/contributing) page in our
+docs to learn how you can contribute and the
+[Development Setup](https://opentelemetry.io/docs/contributing/development) page
+to learn how to build the website locally.
 
 ## Found a security issue?