Fix missing cases of 'web site' to 'website'

... including the index.{md,html} which was in all caps ..

The bin/README.md file (and index.html) was updated slightly with an
added comma: not strictly necessary but for some it might be easier to
read. This was discovered as I was going through the links (not done
checking them yet but so far so good).

index.html

@@ -382,7 +382,7 @@
 
 <!-- BEFORE: 1st line of markdown file: index.md -->
 <!-- XXX - This entire section goes away during the final stages of the Great Fork Merge -->
-<h1 id="this-is-an-experimental-ioccc-web-site">THIS IS AN EXPERIMENTAL IOCCC WEB SITE</h1>
+<h1 id="this-is-an-experimental-ioccc-website">THIS IS AN EXPERIMENTAL IOCCC WEBSITE</h1>
 <p><strong>IMPORTANT: This is NOT the official IOCCC website!</strong></p>
 <p>Please visit <a href="https://www.ioccc.org/index.html">www.ioccc.org</a> for the official IOCCC web.</p>
 <p>Please do <strong>NOT</strong> bookmark nor link to this <a href="https://ioccc-src.github.io/temp-test-ioccc/">experimental website</a>!</p>