Update news_banner.html

Author: MakisH

_includes/news_banner.html

@@ -9,7 +9,7 @@
     <div class="row no-margin">
       <div class="col-lg-12 banner">
         <p class="no-margin">
-          Save the date: <a href="precice-workshop-2025.html">preCICE Workshop 2025, Hamburg, Sep 8-12 </a>
+          Call for contributions and registration open: <a href="precice-workshop-2025.html">preCICE Workshop 2025, Hamburg, Sep 8-12 </a>
         </p>
       </div>
     </div>