Properly format instance of std::bad_alloc

Author: jaredhoberock

exceptions.html

@@ -4,7 +4,7 @@ <h1>Parallel exceptions</h1>
       <h1>Exception reporting behavior</h1>
         <p>
           If temporary memory resources are required by the algorithm and none are available,
-          the algorithm throws a `std::bad_alloc` exception.
+          the algorithm throws a <code>std::bad_alloc</code> exception.
         </p>
         <p>
           During the execution of a standard parallel algorithm, if the application of a function