fix(data): Use http for doc.netpyne.org

Only self-signed certificate for https

Author: mstimberg

simtools/NetPyNE.yaml

@@ -8,7 +8,7 @@ summary: |
 urls:
   homepage: http://www.netpyne.org/
   installation: https://www.netpyne.org/documentation/installation
-  tutorial: https://doc.netpyne.org/tutorial.html
+  tutorial: http://doc.netpyne.org/tutorial.html
   source: https://github.com/suny-downstate-medical-center/netpyne
   issue tracker: https://github.com/suny-downstate-medical-center/netpyne/issues
   documentation: http://doc.netpyne.org/user_documentation.html