Add missing italics

Author: Dani-Hub

xml/issue4150.xml

@@ -50,8 +50,8 @@ void run();
 -6- <i>Effects</i>: Sets the <tt><i>state</i></tt> to <i>running</i>. Then, equivalent to:
 </p>
 <blockquote><pre>
-while (auto* op = pop-front ()) {
-  op-&gt;execute ();
+while (auto* op = <i>pop-front</i>()) {
+  op-&gt;<i>execute</i>();
 }
 </pre></blockquote>
 <p>