Mass typo fix in YYYY/README.md files, rebuild www

'For addition information' should be 'For additional information'.

1998/index.html

@@ -212,7 +212,7 @@ Send such email to:</p>
 purposes only, and should not be used today. See
 <a href="../contact.html">contact.html</a> for up to date contact details
 as well as details on how to provide fixes to any of the entries.
-See also <a href="../faq.html">the IOCCC FAQ</a> for addition information on the IOCCC.</p>
+See also <a href="../faq.html">the IOCCC FAQ</a> for additional information on the IOCCC.</p>
 <p>If you use, distribute or publish these entries in some way, please drop
 us a line. We enjoy seeing who, where and how the contest is used.</p>
 <p>You must include the words ‘ioccc question’ in the subject of your email