DOC add link to plot_svm_tie_breaking.py in SVC and NuSVC (scikit-learn#29976)

Author: wjiayis

sklearn/svm/_classes.py

@@ -739,7 +739,9 @@ class SVC(BaseSVC):
         :term:`predict` will break ties according to the confidence values of
         :term:`decision_function`; otherwise the first class among the tied
         classes is returned. Please note that breaking ties comes at a
-        relatively high computational cost compared to a simple predict.
+        relatively high computational cost compared to a simple predict. See
+        :ref:`sphx_glr_auto_examples_svm_plot_svm_tie_breaking.py` for an
+        example of its usage with ``decision_function_shape='ovr'``.
 
         .. versionadded:: 0.22
 
@@ -1009,6 +1011,8 @@ class NuSVC(BaseSVC):
         :term:`decision_function`; otherwise the first class among the tied
         classes is returned. Please note that breaking ties comes at a
         relatively high computational cost compared to a simple predict.
+        See :ref:`sphx_glr_auto_examples_svm_plot_svm_tie_breaking.py` for an
+        example of its usage with ``decision_function_shape='ovr'``.
 
         .. versionadded:: 0.22