Improve bin/output-year-index.sh

Make it consistent with my improvement to bin/gen-years.sh: the entry
awards in the links (to each entry) are now in bold and so are the link
names. This helps them stand out a bit more.

1996/index.html

@@ -477,17 +477,17 @@ See also <a href="../faq.html">the IOCCC FAQ</a> for additional information on t
 </div>
 <p><a href="1996.tar.bz2"><strong>Download all winning entries from 1996</strong></a></p>
 <ul>
-<li><a href="august/index.html">1996/august</a> - Best of Show</li>
-<li><a href="dalbec/index.html">1996/dalbec</a> - Best numerical obfuscation</li>
-<li><a href="eldby/index.html">1996/eldby</a> - Best output</li>
-<li><a href="gandalf/index.html">1996/gandalf</a> - Best layout</li>
-<li><a href="huffman/index.html">1996/huffman</a> - Best obfuscated character set utility</li>
-<li><a href="jonth/index.html">1996/jonth</a> - Best X11 entry</li>
-<li><a href="rcm/index.html">1996/rcm</a> - Best RFC obfuscation</li>
-<li><a href="schweikh1/index.html">1996/schweikh1</a> - Worst abuse of the C preprocessor</li>
-<li><a href="schweikh2/index.html">1996/schweikh2</a> - Best algorithm</li>
-<li><a href="schweikh3/index.html">1996/schweikh3</a> - Best utility</li>
-<li><a href="westley/index.html">1996/westley</a> - Best one liner</li>
+<li><a href="august/index.html"><strong>1996/august</strong></a> - <strong>Best of Show</strong></li>
+<li><a href="dalbec/index.html"><strong>1996/dalbec</strong></a> - <strong>Best numerical obfuscation</strong></li>
+<li><a href="eldby/index.html"><strong>1996/eldby</strong></a> - <strong>Best output</strong></li>
+<li><a href="gandalf/index.html"><strong>1996/gandalf</strong></a> - <strong>Best layout</strong></li>
+<li><a href="huffman/index.html"><strong>1996/huffman</strong></a> - <strong>Best obfuscated character set utility</strong></li>
+<li><a href="jonth/index.html"><strong>1996/jonth</strong></a> - <strong>Best X11 entry</strong></li>
+<li><a href="rcm/index.html"><strong>1996/rcm</strong></a> - <strong>Best RFC obfuscation</strong></li>
+<li><a href="schweikh1/index.html"><strong>1996/schweikh1</strong></a> - <strong>Worst abuse of the C preprocessor</strong></li>
+<li><a href="schweikh2/index.html"><strong>1996/schweikh2</strong></a> - <strong>Best algorithm</strong></li>
+<li><a href="schweikh3/index.html"><strong>1996/schweikh3</strong></a> - <strong>Best utility</strong></li>
+<li><a href="westley/index.html"><strong>1996/westley</strong></a> - <strong>Best one liner</strong></li>
 </ul>
 <hr style="width:10%;text-align:left;margin-left:0">
 <h4>