Add example of dataset with configuration name to README

README.md

@@ -261,6 +261,12 @@ See sample configs in [configs](configs) folder or [examples](examples) for quic
   datasets:
     - path: vicgalle/alpaca-gpt4
       type: alpaca # format from earlier
+  
+  # huggingface repo with specific configuration/subset
+  datasets:
+    - path: EleutherAI/pile
+      name: enron_emails
+      type: completion # format from earlier
 
   # local
   datasets: