jabba moved us to graphite-sjc

apps/amo/templates/services/graphite.html

@@ -1,5 +1,5 @@
 {% set ns = "stats." + site %}
-{% set base = "https://graphite.mozilla.org/render/?width={0}&height={1}"|f(width, height) %}
+{% set base = "https://graphite-sjc.mozilla.org/render/?width={0}&height={1}"|f(width, height) %}
 
 {% set site_name = {
     'pamo': 'Preview',