Fix CDN title reference

nbusseneau · nbusseneau · commit fb470dc86062 · 2020-08-26T13:48:17.000+02:00
Was generating a RuntimeError. Fixes #14.
diff --git a/blueprints.yaml b/blueprints.yaml
@@ -98,7 +98,7 @@ form:
 
         cdn:
           type: tab
-          title: PLUGINS.MATHJAX.CDN
+          title: PLUGINS.MATHJAX.CDN.TITLE
 
           fields:
             CDN.enabled:
