One more Mathics->Mathics3

Author: rocky

index.html

@@ -43,7 +43,7 @@ <h1><img id="logo" src="images/logo-heptatom.svg" alt="Mathics logo" height="50p
     <!-- Description -->
       <section id="description" class="wrapper style2 special">
         <header class="inner">
-          <h2>Mathics is a free, open-source general-purpose computer
+          <h2>Mathics3 is a free, open-source general-purpose computer
             algebra system featuring Mathematica&#174-compatible syntax and
             functions. It relies on a number of other Python libraries
             in the Python ecosystem.