Fix wrong link for vector_fe_ex9

Author: jwpeterson

doc/html/src/examples.html

@@ -164,7 +164,7 @@ <h1>A Series of Example Programs</h1>
 
 <li><L1><a href="examples/vector_fe_ex8.html">Hybridized Local Discontinuous Galerkin Elements for Poisson</a></L1></li>
 
-<li><L1><a href="examples/vector_fe_ex8.html">Hybridized Local Discontinuous Galerkin Elements for Navier-Stokes</a></L1></li>
+<li><L1><a href="examples/vector_fe_ex9.html">Hybridized Local Discontinuous Galerkin Elements for Navier-Stokes</a></L1></li>
 
 </ol> </li>