fix internal URL in 1992/buzzard.1/index.html

Fixed internal URLs in `1992/buzzard.1/index.html`

Also fixed an internal URL in `1992/buzzard.2/buzzard.2.README.md`.

Ran `bin/readme2index.sh -v 1 1992/buzzard.1` and
`make gen_other_html` to perform the above.

1992/buzzard.2/buzzard.2.README.html

@@ -144,7 +144,7 @@
 <h1 id="first-demos">FIRST demos:</h1>
 <p>Use <code>./first &lt; &lt;demo&gt;</code>.</p>
 <ul>
-<li><a href="demo1.1st">demo1.1st</a> - prints Hello World! assuming ASCII</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1992/buzzard.2/demo1.1st">demo1.1st</a> - prints Hello World! assuming ASCII</li>
 </ul>
 <h1 id="third-demos">THIRD demos:</h1>
 <p>Use <code>cat third &lt;demo&gt; | ./first</code>.</p>