add hack-a-round for language specified markdown code blocks

When language is specified in a markdown code block such as:

````
```c
    printf("Hello, world!\n");
```
````

is used, the resulting HTML as produced by `pandoc(1)` combined
with our revised `ioccc.css` is not intent the code block well.

A temporary "_hack-a-round_" is to turn the "markdown code language
specifier" into an HTML comment.  For example:

````
```<!---c-->
    printf("Hello, world!\n");
```
````

This commits turns off existing markdown code language specifiers
for now, while preserving our ability to restore them in the future
when a better  "_hack-a-round_" to the "markdown code language
specifier" problem is found.

The HTML impact if this "_hack-a-round_" is to produce HTML that
looks like this:

```
<pre class="&lt;!---c--&gt;"><code> .. </code></pre>
```

We might be able to create a complex set of classes for each markdown
code language (there won't be very many) in `ioccc.css`, or we might
find a more general CSS (or maybe `pandoc(1)`?) solution.

For now, this hack-a-round will have to do.

1992/albert/README.md

@@ -1,6 +1,6 @@
 ## To build:
 
-```sh
+```<!---sh-->
     make all
 ```
 
@@ -21,14 +21,14 @@ For more detailed information see [1992 albert bugs](../../bugs.html#1992_albert
 
 ## To use:
 
-```sh
+```<!---sh-->
     ./albert number
 ```
 
 
 ## Try:
 
-```sh
+```<!---sh-->
     ./try.sh
 ```
 
@@ -64,7 +64,7 @@ The [albert.alt.c](albert.c) file is the fixed file, whereas the
 
 To compile this alternate version:
 
-```sh
+```<!---sh-->
     make alt
 ```
 
@@ -76,7 +76,7 @@ Use `albert.alt` as you would `albert` above.
 
 ### Alternate try:
 
-```sh
+```<!---sh-->
     ./try.alt.sh
 ```
 
@@ -106,7 +106,7 @@ if you want to factor Fermat's 4th number. Then just run it.
 Or you may type `./albert <some-number>`
 A nice one is also (30 ones):
 
-```sh
+```<!---sh-->
     ./albert 111111111111111111111111111111
 ```
 
@@ -114,7 +114,7 @@ Apart from the foregoing there are no special execution instructions.
 
 To customize the program into a factorizer of a fixed number, use
 
-```sh
+```<!---sh-->
     cc albert.c -o 4294967297
 ```
 

1992/albert/index.html

@@ -141,16 +141,16 @@ Location: <a href="../../location.html#NL">NL</a> - <em>Kingdom of the Netherlan
 <!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
 
 <h2 id="to-build">To build:</h2>
-<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">make</span> all</span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    make all</code></pre>
 <p>An <a href="#alternate-code">alternate version</a> exists that fixes a bug.</p>
 <h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
 <p>The current status of this entry is:</p>
 <pre><code>    STATUS: known bug - please help us fix</code></pre>
 <p>For more detailed information see <a href="../../bugs.html#1992_albert">1992 albert bugs</a>.</p>
 <h2 id="to-use">To use:</h2>
-<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./albert</span> number</span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    ./albert number</code></pre>
 <h2 id="try">Try:</h2>
-<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./try.sh</span></span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    ./try.sh</code></pre>
 <h2 id="alternate-code">Alternate code:</h2>
 <p>An alternate version of this entry, <a href="albert.alt.c">albert.alt.c</a>, is provided.
 Leo Broukhis, before he was an IOCCC judge, sent the IOCCC
@@ -173,11 +173,11 @@ judges this Email message:</p>
 <a href="albert.c">albert.c</a> is the file before applying Leo Broukhis’ fix.</p>
 <h3 id="alternate-build">Alternate build:</h3>
 <p>To compile this alternate version:</p>
-<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">make</span> alt</span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    make alt</code></pre>
 <h3 id="alternate-use">Alternate use:</h3>
 <p>Use <code>albert.alt</code> as you would <code>albert</code> above.</p>
 <h3 id="alternate-try">Alternate try:</h3>
-<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./try.alt.sh</span></span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    ./try.alt.sh</code></pre>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>We were impressed with the speed at which it was able to factor
 arbitrarily large numbers consisting of factors that fit into
@@ -194,10 +194,10 @@ multiplication, until the candidate factor no longer fits in a signed long.</p>
 if you want to factor Fermat’s 4th number. Then just run it.</p>
 <p>Or you may type <code>./albert &lt;some-number&gt;</code>
 A nice one is also (30 ones):</p>
-<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./albert</span> 111111111111111111111111111111</span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    ./albert 111111111111111111111111111111</code></pre>
 <p>Apart from the foregoing there are no special execution instructions.</p>
 <p>To customize the program into a factorizer of a fixed number, use</p>
-<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">cc</span> albert.c <span class="at">-o</span> 4294967297</span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    cc albert.c -o 4294967297</code></pre>
 <p>or some such.</p>
 <p>There are no data files used, and it is not possible to feed input
 via <code>stdin</code>.</p>