convert spoiler language and towards deobfuscation language

2015/schweikhardt/README.md

@@ -380,7 +380,7 @@ to be.
 
 ### Examine the algorithm
 
-Spoilers ahead. Duh!
+Deobfuscation information ahead. Duh!
 
 Pseudocode, with comments matching those in the C source:
 

2015/schweikhardt/index.html

@@ -666,7 +666,7 @@ as <code>(256 + 128 + 4 + 2) * 512</code> minimizes the character count. That’
 judges get when they don’t like programs that are longer than they need
 to be.</p>
 <h3 id="examine-the-algorithm">Examine the algorithm</h3>
-<p>Spoilers ahead. Duh!</p>
+<p>Deobfuscation information ahead. Duh!</p>
 <p>Pseudocode, with comments matching those in the C source:</p>
 <pre><code>    /* run */
     if (non-NULL and nonempty argv[1]) {