Update shell.html

_includes/install_instructions/shell.html

@@ -102,6 +102,7 @@ <h3>The Bash Shell</h3>
         </ol>
         <p>This will provide you with both Git and Bash in the Git Bash program.</p>
         <h4>Video Tutorial</h4>
+	<p>(The tutorial could be a little outdated, so take with a grain of salt; however, it includes a nice test section for whether your installation was successful at 2:10 min for bash and at 4:00 min for the nano editor.)</p>
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         <iframe type="text/html" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" src="https://www.youtube-nocookie.com/embed/339AEqk9c-8?modestbranding=1&playsinline=1&iv_load_policy=3&rel=0" class="yt-frame" allowfullscreen></iframe>