Finish fixing html files in 2004

There is one thing brought up on GitHub that might necessitate a minor
change but that can happen later.

2004/vik1/index.html

@@ -409,7 +409,7 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 <!-- BEFORE: 1st line of markdown file: 2004/vik1/README.md -->
 <h2 id="to-build">To build:</h2>
 <pre><code>    make</code></pre>
-<p>NOTE: this entry requires the <code>X11/Xlib.h</code> header file and the X11 library to
+<p><strong>NOTE</strong>: this entry requires the <code>X11/Xlib.h</code> header file and the X11 library to
 compile. For more information see the
 FAQ on “<a href="../../faq.html#X11">X11</a>”.</p>
 <h2 id="to-use">To use:</h2>
@@ -454,20 +454,49 @@ glance at the feature list he provided below. Amazing!</p>
 <p>Compile the source code and link X libraries if necessary.
 The program takes three options which have to be typed in a specific
 order as described below.</p>
-<pre><code>    Usage: ./vik1 [&#39;a&#39;][&#39;d&#39;][#]
-
-    a   - Advanced racing in a winter landscape
-    d   - Racing in at night in the dark
-    #   - Race track selection 1-3 are valid numbers</code></pre>
-<p>Here are a few examples:</p>
-<pre><code>    Command line:             Description:
-
-    ./vik1                    Run track 1 at daytime in the summer
-    ./vik1 a                  Run track 1 at daytime in the winter
-    ./vik1 d                  Run track 1 at night in the summer
-    ./vik1 3                  Run track 3 at daytime in the summer
-    ./vik1 d3                 Run track 3 at night in the summer
-    ./vik1 ad2                Run track 2 at night in the winter</code></pre>
+<h4 id="usage">Usage:</h4>
+<pre><code>    ./vik1 [&#39;a&#39;][&#39;d&#39;][#]</code></pre>
+<ul>
+<li><code>a</code>
+<ul>
+<li>Advanced racing in a winter landscape.</li>
+</ul></li>
+<li><code>d</code>
+<ul>
+<li>Racing in at night in the dark.</li>
+</ul></li>
+<li><code>#</code>
+<ul>
+<li>Race track selection 1-3 are valid numbers.</li>
+</ul></li>
+</ul>
+<h4 id="examples">Examples:</h4>
+<ul>
+<li><code>./vik1</code>
+<ul>
+<li>Run track 1 at daytime in the summer.</li>
+</ul></li>
+<li><code>./vik1 a</code>
+<ul>
+<li>Run track 1 at daytime in the winter.</li>
+</ul></li>
+<li><code>./vik1 d</code>
+<ul>
+<li>Run track 1 at night in the summer.</li>
+</ul></li>
+<li><code>./vik1 3</code>
+<ul>
+<li>Run track 3 at daytime in the summer.</li>
+</ul></li>
+<li><code>./vik1 d3</code>
+<ul>
+<li>Run track 3 at night in the summer.</li>
+</ul></li>
+<li><code>./vik1 ad2</code>
+<ul>
+<li>Run track 2 at night in the winter.</li>
+</ul></li>
+</ul>
 <p>Note that the order in which the argument characters are entered is
 important. It is for example not possible to type <code>./vik1 da</code>. (Well it is
 possible, but the result will not be as expected.)</p>
@@ -492,7 +521,7 @@ the entry point of the application.</p>
 makes the program more obscure.</p>
 <h3 id="compiler-warnings">Compiler warnings</h3>
 <p>There are no compiler warnings when compiling with <code>-ansi</code> but there are
-many warnings from lclint. Mainly because the program is very
+many warnings from lclint, mainly because the program is very
 optimized for code size.</p>
 <h3 id="limitations">Limitations</h3>
 <p>The program only compiles and runs on X based systems.</p>