Make ^NOTE in markdown/html files bold

2012/vik/README.md

@@ -157,7 +157,7 @@ correctly:
     _setmode(_fileno(stdout), 0x8000);
 ```
 
-NOTE: this is what the [Alternate code](#alternate-code) does.
+**NOTE**: this is what the [Alternate code](#alternate-code) does.
 
 
 ### Limitations

2012/vik/index.html

@@ -490,7 +490,7 @@ compile the program on this platform, the following line can be added after
 the variable declarations in the main declaration in order to run
 correctly:</p>
 <pre><code>    _setmode(_fileno(stdout), 0x8000);</code></pre>
-<p>NOTE: this is what the <a href="#alternate-code">Alternate code</a> does.</p>
+<p><strong>NOTE</strong>: this is what the <a href="#alternate-code">Alternate code</a> does.</p>
 <h3 id="limitations">Limitations</h3>
 <p>The program doesn’t have many error checks so passing in invalid arguments
 or images of mismatching sizes, or unsupported pixel formats will cause the