Link out to interactive IBM Quantum lab version (#1045)

Author: nonhermitian

conf.py

@@ -105,6 +105,7 @@
     .. note::
         This page was generated from `{{ docname }}`__.
 
+        Run interactively in the `IBM Quantum lab <https://quantum-computing.ibm.com/jupyter/tutorial/{{ env.doc2path(env.docname, base=None)|replace("tutorials/", "") }}>`_.
 
     __ https://github.com/Qiskit/qiskit-tutorials/blob/master/{{ docname }}