Fix 1984/decot alt build

In the case of this entry, it is so screwy that having the CFLAGS
conflicts with the -traditional-cpp option in some systems. Thus the alt
rule has ONLY the -traditional-cpp option. The thanks file notes this
oddity and how to view the diff between the original and the alternate
code.

Also the bugs file was changed to be worded like the README.md file.

The index.html file was improved for the fix to the Makefile (for the
alt build) and it also links to the specific lines in the code on GitHub
(see the index.html file how it talks about specific lines in the
judges' remarks).

bugs.html

@@ -696,8 +696,8 @@ own fix or suggest that they’re fixed!</p>
 <h3 id="status-inabiaf---please-do-not-fix-1">STATUS: INABIAF - please <strong>DO NOT</strong> fix</h3>
 <h3 id="source-code-1984decotdecot.c">Source code: <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/decot/decot.c">1984/decot/decot.c</a></h3>
 <h3 id="information-1984decotindex.html">Information: <a href="1984/decot/index.html">1984/decot/index.html</a></h3>
-<p>The purpose of this program is to print out a string of rubbish. In particular
-you should see something like:</p>
+<p>The purpose of this program is to print out what looks like a fragment of C
+code.. In particular you should see something like:</p>
 <pre><code>    $ ./decot
     &#39;&quot;,x);      /*
     \</code></pre>