Merge pull request #904 from bradp/patch-1

Add missing space in comment

_posts/09-02-01-Errors.md

@@ -87,7 +87,7 @@ rewritten like this:
 
 {% highlight php %}
 <?php
-//Null Coalescing Operator
+// Null Coalescing Operator
 echo $foo['bar'] ?? '';
 {% endhighlight %}