Replace '&' symbols in URL

Felicity Chapman · Felicity Chapman · commit 2847d5eaac29 · 2018-11-12T16:34:19.000Z
diff --git a/cpp/ql/src/Architecture/General Class-Level Information/InheritanceDepthDistribution.qhelp b/cpp/ql/src/Architecture/General Class-Level Information/InheritanceDepthDistribution.qhelp
@@ -26,7 +26,7 @@ IEEE Transactions on Software Engineering,
 20(6), pages 476-493, June 1994.</li>
 
 <li>
-Lutz Prechelt, Barbara Unger, Michael Philippsen, and Walter Tich, <i><a href="http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.159.2229&rep=rep1&type=pdf">A Controlled Experiment on Inheritance Depth as a Cost Factor for Code Maintenance
+Lutz Prechelt, Barbara Unger, Michael Philippsen, and Walter Tich, <i><a href="http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.159.2229&amp;rep=rep1&amp;type=pdf">A Controlled Experiment on Inheritance Depth as a Cost Factor for Code Maintenance
 </a></i>.
 Journal of Systems and Software, 65 (2):115-126, 2003.
 </li>
