Fix Ubuntu major version

Author: zware

speed_python/templates/about.html

@@ -63,7 +63,7 @@ <h4>The Machine</h4>
     <li>2 HP DL380 G7 Intel® Xeon® X5680 (3.33GHz/6-core/130W/12MB) FIO
     Processor Kit</li>
 </ul>
-The machine is configured with Ubuntu 14.04 LTS, HW RAID and a simple LVM setup.
+The machine is configured with Ubuntu 18.04 LTS, HW RAID and a simple LVM setup.
 HP's generous donation can not be spoken of highly enough.
 </p>