Changed the wording to reflect new location (#3177)

Author: shairez

public/docs/ts/latest/guide/testing.jade

@@ -370,7 +370,7 @@ a#testbed
   that almost everyone needs.
 .l-sub-section
   :marked
-    The testing shims mentioned [earlier](#setup) initialize the testing module configuration
+    The testing shims mentioned [later](#testbed-methods) initialize the testing module configuration
     to something like the `BrowserModule` from `@angular/platform-browser`.
 :marked
   This default configuration is merely a _foundation_ for testing an app.