fix HTML in 1991/ant/index.html

We remove what was mistaken for a markdown checkbox
by playing `1991/ant/README.md` instructions
into a code block.

Also render previous fix to `2015/index.html`.

Run `make gen_year_index` to perform the above.
Run `bin/readme2index.sh -v 1 1991/ant` to perform the above.

1991/ant/README.md

@@ -87,21 +87,25 @@ results depending on the implementation of `curses`.
 
 ### Commands
 
--    h j k l	    left, down, up, right cursor movement
+```
--    H J K L	    word left, page down, page up, word right
+    h j k l	    left, down, up, right cursor movement
--    [ ]		    beginning and end of line
+    H J K L	    word left, page down, page up, word right
--    t b		    top and bottom of file
+    [ ]		    beginning and end of line
--    i		    enter insert mode, form-feed to quit
+    t b		    top and bottom of file
--    x		    delete character under the cursor
+    i		    enter insert mode, form-feed to quit
--    W		    write buffer to file
+    x		    delete character under the cursor
--    R		    refresh the screen
+    W		    write buffer to file
--    Q		    quit
+    R		    refresh the screen
+    Q		    quit
+```
 
 
 ### Exit status
 
--    0		    success
+```
--    2		    missing edit filename
+    0		    success
+    2		    missing edit filename
+```
 
 
 ### About this entry

1991/ant/index.html

@@ -198,22 +198,18 @@ Carriage return is mapped to newline on input and ignored on output. Tab stops
 are every eight columns. Non-printable characters may have unpredictable
 results depending on the implementation of <code>curses</code>.</p>
 <h3 id="commands">Commands</h3>
-<ul>
+<pre><code>    h j k l         left, down, up, right cursor movement
-<li>h j k l left, down, up, right cursor movement</li>
+    H J K L         word left, page down, page up, word right
-<li>H J K L word left, page down, page up, word right</li>
+    [ ]             beginning and end of line
-<li><label><input type="checkbox" />beginning and end of line</label></li>
+    t b             top and bottom of file
-<li>t b top and bottom of file</li>
+    i               enter insert mode, form-feed to quit
-<li>i enter insert mode, form-feed to quit</li>
+    x               delete character under the cursor
-<li>x delete character under the cursor</li>
+    W               write buffer to file
-<li>W write buffer to file</li>
+    R               refresh the screen
-<li>R refresh the screen</li>
+    Q               quit</code></pre>
-<li>Q quit</li>
-</ul>
 <h3 id="exit-status">Exit status</h3>
-<ul>
+<pre><code>    0               success
-<li>0 success</li>
+    2               missing edit filename</code></pre>
-<li>2 missing edit filename</li>
-</ul>
 <h3 id="about-this-entry">About this entry</h3>
 <p>The <code>BUF</code> size should be set at compile time to 32767. This value was used
 because the Sozobon C compiler for the Atari ST has 16 bit ints and a limit on

2015/index.html

@@ -180,14 +180,14 @@ one of the all time best IOCCC entries from 1984.</p>
 would have been much higher had some people paid attention to rules 2
 and 22 (one third of 666).</p>
 <p>Rule 22, now known as <strong>Catch 22</strong> states:</p>
-<pre><code>    |  22) Your source code, data files, remarks and program output must NOT
+<pre><code>    22) Your source code, data files, remarks and program output must NOT
-    |      identify the authors of your code.  The judges STRONGLY prefer to
+        identify the authors of your code.  The judges STRONGLY prefer to
-    |      not know who is submitting entries to the IOCCC.
+        not know who is submitting entries to the IOCCC.
 
-    |      The &quot;Peter Honeyman is exempt&quot; guideline also applies to this rule.
+        The &quot;Peter Honeyman is exempt&quot; guideline also applies to this rule.
-    |      Identifying yourself, in an obvious way in your code, data, remarks
+        Identifying yourself, in an obvious way in your code, data, remarks
-    |      or program output, unless you are Peter Honeyman or pretending
+        or program output, unless you are Peter Honeyman or pretending
-    |      to be Peter Honeyman, will be grounds for disqualification of your entry.</code></pre>
+        to be Peter Honeyman, will be grounds for disqualification of your entry.</code></pre>
 <p>A number of other entries were based on <a href="iocccsize.c">iocccsize.c</a>, making
 derivative works rather than original works.</p>
 <p>Still other entries were too large, violating the first line of rule 2:</p>