testing: add link to plgd hub testing
@@ -147,6 +147,7 @@ Other information sources
- `OCF Specifications <https://openconnectivity.org/developer/specifications/>`_
- `oneIOTa data models <https://openconnectivity.org/developer/oneiota-data-model-tool>`_
- `plgd (OCF compliant Cloud implementation) <https://plgd.dev/>`_
+- `plgd testing <https://plgd.dev/developer-guide/testing/>`_
- `Wiki <https://github.com/iotivity/iotivity-lite/wiki>`_
