Added linebreak before EOF

Author: MrcSnm

views/advanced_usage.dt

@@ -54,4 +54,5 @@ block body
 
 	p For adding subpackages in your project, execute <code> dub add &lt;packagename&gt;:&lt;subpackage&gt; </code>
 
-	p If you need to compile a subpackage only, use <code> dub build :&lt;subpackage&gt;
+	p If you need to compile a subpackage only, use <code> dub build :&lt;subpackage&gt;
+