Add "update the website" step to release process

Signed-off-by: Aanand Prasad <[email protected]>

CONTRIBUTING.md

@@ -90,4 +90,4 @@ The easiest way to do this is to use the `--signoff` flag when committing. E.g.:
 
 5. Publish GitHub release, creating tag
 
-
+6. Update website with `script/deploy-docs`