DOC: Add Link to existing Label Propagation Example
In , there are four example files, but in , only three of them are mentioned in *Examples*.
We should add the missing example file to the list of examples.
@@ -86,6 +86,7 @@ which can drastically reduce running times.
* :ref:`sphx_glr_auto_examples_semi_supervised_plot_label_propagation_versus_svm_iris.py`
* :ref:`sphx_glr_auto_examples_semi_supervised_plot_label_propagation_structure.py`
+ * :ref:`sphx_glr_auto_examples_semi_supervised_plot_label_propagation_digits.py`
* :ref:`sphx_glr_auto_examples_semi_supervised_plot_label_propagation_digits_active_learning.py`
.. topic:: References
