simd::operator~() -> this operator as suggested by Bryce

Author: jaredhoberock

data_parallel_types.html

@@ -1582,7 +1582,7 @@ <h1><ins>Unary operators</ins></h1>
 
         <cxx-remarks>
         <ins>
-          <code>simd::operator~()</code> shall not participate in overload resolution unless <code>T</code> is an integral type.
+          This operator shall not participate in overload resolution unless <code>T</code> is an integral type.
         </ins>
         </cxx-remarks>
       </cxx-function>