Format fixes in html files of 1994

1994/ldb/index.html

@@ -417,7 +417,7 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 <p>Trigraphs are natural obfuscators. Most C-beautifiers become C-uglifiers
 because they don’t handle them correctly.</p>
 <p>Can you figure out how it prints a given random line (or if the line is longer
-than 231 characters, part of that line) from stdin?</p>
+than 231 characters, part of that line) from <code>stdin</code>?</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>All input lines must be under 232 characters long. The compiling
 platform should be ASCII based.</p>