Fix exception description for PooledConnectionLifetime (#9716)

Author: kevincathcart-cas

xml/System.Net.Http/SocketsHttpHandler.xml

@@ -993,7 +993,7 @@ For example, if the value is 64, then 65,536 bytes are allowed for the maximum r
 
  ]]></format>
         </remarks>
-        <exception cref="T:System.ArgumentOutOfRangeException">The value specified is less than <see cref="F:System.TimeSpan.Zero" /> and is not <see cref="F:System.Threading.Timeout.InfiniteTimeSpan" />.</exception>
+        <exception cref="T:System.ArgumentOutOfRangeException">The value specified is less than <see cref="F:System.TimeSpan.Zero" /> (except <see cref="F:System.Threading.Timeout.InfiniteTimeSpan" />).</exception>
         <exception cref="T:System.InvalidOperationException">An operation has already been started on the current instance.</exception>
         <exception cref="T:System.ObjectDisposedException">The current instance has been disposed.</exception>
       </Docs>