DOC Add missing cross validation image alt (scikit-learn#26261)

marekhanus · adrinjalali · web-flow · commit 1090121815f9 · 2023-07-28T14:26:57.000+02:00
Co-authored-by: Adrin Jalali &lt;adrin.jalali@gmail.com&gt;
diff --git a/doc/modules/cross_validation.rst b/doc/modules/cross_validation.rst
@@ -102,6 +102,7 @@ where the number of samples is very small.
 .. image:: ../images/grid_search_cross_validation.png
    :width: 500px
    :height: 300px
+   :alt: A depiction of a 5 fold cross validation on a training set, while holding out a test set.
    :align: center
 
 Computing cross-validated metrics
