Added blank lines before footer

Author: GraemeMalcolm

index.md

@@ -21,7 +21,9 @@ If a more complex setup is required, create a separate markdown file with setup
 {% for activity in labs  %}
 - [{{ activity.lab.title }}]({{ site.github.url }}{{ activity.url }})
 {% endfor %}
-
+<br>
+<br>
+<br>
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