add image to apache_template page (#159)

Co-authored-by: TheWitness <thewitness@cacti.net>
Co-authored-by: Mark Brugnoli-Vinten <netniv@hotmail.com>

apache_template_config.md

@@ -2,6 +2,8 @@ The Apache http webserver template allows you to monitor your local Cacti server
 
 This template leverages the mod_status module in apache in order to pull the kpi data to feed into the script
 
+![apache template view](images/apache-template-preview.png)
+
 For Centos/Redhat implimentations the config will look as follows
 
 Place the below config in  /etc/httpd/conf/httpd.conf