convert spoiler language and towards deobfuscation language

1989/paul/README.md

@@ -41,7 +41,7 @@ better debugger or trace could easily be added.
 
 ## Judges' remarks:
 
-The author's comments is a detailed program explanation and spoiler.  If you
+The author's comments contains detailed deobfuscation information.  If you
 want a real challenge, don't read any further and try to understand the program
 via the source.
 

1989/paul/index.html

@@ -420,7 +420,7 @@ better debugger or trace could easily be added.</p>
 <h3 id="alternate-use">Alternate use:</h3>
 <pre><code>    ./paul.alt</code></pre>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
-<p>The author’s comments is a detailed program explanation and spoiler. If you
+<p>The author’s comments contains detailed deobfuscation information. If you
 want a real challenge, don’t read any further and try to understand the program
 via the source.</p>
 <h3 id="historical-note">Historical note:</h3>