Update 2020 HT 5

2020ht5/index.html

@@ -328,7 +328,7 @@
 close(1)                                = 0
 close(2)                                = 0
 exit_group(1)                           = ?
-+++ exited with 1 +++</code></pre></section><section><h2>ltrace</h2><p>Library call tracer</p><p><code>ltrace program args...</code></p></section><section><h2>ltrace</h2><p>Let's trace this program:</p><pre class="font75"><code class="c">#include <stdio.h>
++++ exited with 1 +++</code></pre></section><section><h2>ltrace</h2><p>Library call tracer</p><p><code>ltrace program args...</code></p></section><section><h2>ltrace</h2><p>Let's trace this program:</p><pre class="font75"><code class="c">#include &lt;stdio.h&gt;
 
 int main() {
     printf("Hello world!\n");