Update link

Author: ArturoAmorQ

jupyter-book/_config.yml

@@ -47,7 +47,7 @@ html:
     <div>
       <div class="mooc_add">
        <a href="https://www.fun-mooc.fr/en/courses/machine-learning-python-scikit-learn">Join the full MOOC experience</a>
-       <a href="https://certification.probabl.ai/">Get officially certified!</a>
+       <a href="https://probabl.ai/certification?utm_source=inria&utm_medium=mooc&utm_campaign=2026_inria_mooc_referrals">Get officially certified!</a>
       </div>
       Brought to you under a <a href="https://github.com/INRIA/scikit-learn-mooc/blob/main/LICENSE">CC-BY License</a> by
       <a href="https://learninglab.inria.fr">Inria Learning Lab</a>,