Add metadata to column on the right

See column on the right in https://huggingface.co/datasets/wikimedia/wikipedia
with Homepage and Point of contact.

README.md

@@ -27,6 +27,10 @@ configs:
 
 # Dataset Card for Wikimedia Structured Wikipedia
 
+## Dataset Description
+
+- **Homepage:** https://enterprise.wikimedia.com/
+- **Point of Contact:** [sdelbecque@wikimedia.org](mailto:sdelbecque@wikimedia.org)
 
 ## Dataset Description