Make ^NOTE in markdown/html files bold

1984/mullender/README.md

@@ -4,7 +4,7 @@
     make alt
 ```
 
-NOTE: the original code will not work on any system other than
+**NOTE**: the original code will not work on any system other than
 [VAX-11](https://en.wikipedia.org/wiki/VAX-11) and
 [PDP-11](https://en.wikipedia.org/wiki/PDP-11) and this is why we encourage you
 to use the alt version instead. See [original code](#original-code) below for
@@ -151,7 +151,7 @@ Repo](https://github.com/dspinellis/unix-history-repo/tree/Research-Release).
     ./gentab gentab > g.c
 ```
 
-NOTE: it is highly unlikely that you will be able to run the output of `gentab`
+**NOTE**: it is highly unlikely that you will be able to run the output of `gentab`
 but it should at least compile.
 
 

1984/mullender/index.html

@@ -415,7 +415,7 @@ Location: <a href="../../location.html#NL">NL</a> - <em>Kingdom of the Netherlan
 <!-- BEFORE: 1st line of markdown file: 1984/mullender/README.md -->
 <h2 id="to-build">To build:</h2>
 <pre><code>    make alt</code></pre>
-<p>NOTE: the original code will not work on any system other than
+<p><strong>NOTE</strong>: the original code will not work on any system other than
 <a href="https://en.wikipedia.org/wiki/VAX-11">VAX-11</a> and
 <a href="https://en.wikipedia.org/wiki/PDP-11">PDP-11</a> and this is why we encourage you
 to use the alt version instead. See <a href="#original-code">original code</a> below for
@@ -502,7 +502,7 @@ Repo</a>.</p>
 <pre><code>    ./gentab file</code></pre>
 <h3 id="gentab-try">gentab try:</h3>
 <pre><code>    ./gentab gentab &gt; g.c</code></pre>
-<p>NOTE: it is highly unlikely that you will be able to run the output of <code>gentab</code>
+<p><strong>NOTE</strong>: it is highly unlikely that you will be able to run the output of <code>gentab</code>
 but it should at least compile.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <h3 id="notes-from-the-judges">Notes from the judges:</h3>