Update presentation/docker_workshop_1.html

Corrected the syntax error in the html file. (<) and (>) symbols can't be directly used in html files due to which the content was not rendering out correctly leading to confusion.

presentation/docker_workshop_1.html

@@ -1356,7 +1356,7 @@ <h2> Deep Drive Into Dockerfile   </h2>
 	<p> Build Docker Image </p> 
 	<pre><code class="hljs" data-trim contenteditable>
 
-docker build -t saiyam911/alpine-add . -f <name of dockerfile>
+docker build -t saiyam911/alpine-add . -f [name of dockerfile]
 
 	</code></pre>	
 	<p> Tagging image as labs-git </p>