convert more spoiler into deobfuscation

2020/ferguson1/HACKING.html

@@ -495,7 +495,7 @@ left it might be:</p>
 Please note that modifier keys like ctrl aren’t detectable or at least I’m
 unaware of how to do so.</p>
 <h2 id="modifying-the-statusscore-line-table-of-variablesstats-below">Modifying the status/score line (table of variables/stats below)</h2>
-<h3 id="spoiler-warning">SPOILER WARNING</h3>
+<h3 id="deobfuscation-notice">DEOBFUSCATION NOTICE</h3>
 <p>Below I give a table of some variables/expressions along with the data types and
 their respective format specifiers of the data. Originally it was a lot more
 detailed but as I started obfuscating things variables started to disappear and