chore(i18n): fix broken plunker link (#2519)

Author: wardbell

public/docs/ts/latest/cookbook/i18n.jade

@@ -15,7 +15,7 @@ include ../_util-fns
       * [AoT configuration](#aot)
 
 :marked
-  **Try this** <live-example>live example</live-example> of a JiT-compiled app, translated into French.
+  **Try this** <live-example name="cb-i18n">live example</live-example> of a JiT-compiled app, translated into French.
 
 
 a#angular-i18n