Change "may be vectorized" to "may be vectorized and parallelized"

Author: arturl

execution_policies.html

@@ -166,7 +166,7 @@ <h1><ins2>Parallel+</ins2>Vector execution policy</h1>
 </del2>
 </pre>
 
-    <p>The class <code>class <del2>vector_execution_policy</del2><ins2>parallel_vector_execution_policy</ins2></code> is an execution policy type used as a unique type to disambiguate parallel algorithm overloading and indicate that a parallel algorithm's execution may be vectorized.</p>
+    <p>The class <code>class <del2>vector_execution_policy</del2><ins2>parallel_vector_execution_policy</ins2></code> is an execution policy type used as a unique type to disambiguate parallel algorithm overloading and indicate that a parallel algorithm's execution may be vectorized and parallelized.</p>
 
   </cxx-section>