convert spoiler language and towards deobfuscation language

2000/primenum/README.md

@@ -34,7 +34,7 @@ NOTE: `n` is an integer.
 
 ## Judges' remarks:
 
-Don't read the author remarks until you're ready for the spoiler.
+Don't read the author remarks until you're ready for some obfuscation information.
 Just stop and read the program; it won't take long.  Once you've figured
 out what it does, run it.  It may surprise you.
 

2000/primenum/index.html

@@ -413,7 +413,7 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 <h2 id="try">Try:</h2>
 <pre><code>    ./try.sh</code></pre>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
-<p>Don’t read the author remarks until you’re ready for the spoiler.
+<p>Don’t read the author remarks until you’re ready for some obfuscation information.
 Just stop and read the program; it won’t take long. Once you’ve figured
 out what it does, run it. It may surprise you.</p>
 <p>This entry won, not because the obfuscation is impenetrable, but because