convert more spoiler into deobfuscation

bugs.html

@@ -2811,8 +2811,8 @@ used.</li>
 <p>Also, it requires a space between identifiers. In short, use <code>(S K)</code> instead of
 <code>(SK)</code>, “`sk”, **i<em>i</em>i<em>ii</em>i<em>i</em>ii<code>, or</code>11111100011100`.</p>
 <p>Huge memory may be required to compile the program (about 300 MB on my machine).</p>
-<p>In addition, there are some limitations (and workarounds) mentioned in <a href="2013/endoh1/index.html#spoiler">Spoiler
-section</a>.</p>
+<p>In addition, there are some limitations (and workarounds) mentioned in the
+<a href="2013/endoh1/index.html#deobfuscation">Deobfuscation section</a>.</p>
 <p>–</p>
 <div id="2013_endoh3">
 <h2 id="endoh3">2013/endoh3</h2>