Minor tweak to text in visualization tab

Author: rgommers

layouts/partials/visualization.html

@@ -54,7 +54,7 @@
         </div>
         <div>
             <p>
-                NumPy transforms the data in the burgeoning
+                NumPy is an essential component in the burgeoning
                 <a href="https://pyviz.org/overviews/index.html">Python visualization landscape</a>, which includes
                 <a href="https://matplotlib.org">Matplotlib</a>,
                 <a href="https://seaborn.pydata.org">Seaborn</a>,
@@ -74,4 +74,4 @@
         <div>
         </div>
     </div>
-</li>
+</li>