convert more spoiler into deobfuscation

2019/index.html

@@ -415,7 +415,7 @@ are rather similar to previous entries</p>
 </blockquote>
 <p>because the entry <a href="dogon/index.html">2019/dogon</a> appropriately pays homage
 to past entries without blatantly reusing their code.</p>
-<p>…We’ll stop spouting spoilers now. Have fun exploring all the entries!</p>
+<p>…We’ll stop spouting deobfuscation information now. Have fun exploring all the entries!</p>
 <h2 id="remarks-on-some-of-submissions-that-did-not-win">Remarks on some of submissions that did not win</h2>
 <p>Some entries tried to get around the size limit by submitting a data
 file that was really C code and then blindly including code in prog.c.</p>