fix link to notebook

diff --git a/contrib/python-bindings/notebooks/index.ipynb b/contrib/python-bindings/notebooks/index.ipynb
index 4611e00ecd6418a1eda541d688acc5a37bfa378a..86b82412efb66ce34ad8176924cafe266442ee62 100644 (file)
--- a/contrib/python-bindings/notebooks/index.ipynb
+++ b/contrib/python-bindings/notebooks/index.ipynb
@@ -11,7 +11,7 @@
     "[tutorial-1](https://github.com/dealii/dealii/tree/master/contrib/python-bindings/notebooks/tutorial-1.ipynb) shows how to create a **Triangulation** using the python binding. We also show how to refine the grid, merge two **Triangulations**, and finally how to output the **Triangulation** so that it can be loaded in a C++ code.\n",
     "\n",
     "## step-62\n",
-    "[step-62](https://github.com/dealii/dealii/tree/phononic-cavity/examples/step-62/step-62.ipynb) shows how to to calculate the [energy band gap](https://en.wikipedia.org/wiki/Band_gap) and the\n",
+    "[step-62](https://github.com/dealii/dealii/tree/master/examples/step-62/step-62.ipynb) shows how to to calculate the [energy band gap](https://en.wikipedia.org/wiki/Band_gap) and the\n",
     "mechanical resonance of a [micropillar superlattice cavity](https://doi.org/10.1103/PhysRevA.94.033813).\n"
    ]
   }