Merge pull request #8375 from mollux/CRM-18563_example_exception_inconsistent

CRM-18563 Generate the same structure for API success and API failures in the API examples.

tests/templates/documentFunction.tpl

@@ -30,7 +30,8 @@ function {$function}_example() {literal}{{/literal}
     $errorCode = $e->getErrorCode();
     $errorData = $e->getExtraParams();
     return array(
-      'error' => $errorMessage,
+      'is_error' => 1,
+      'error_message' => $errorMessage,
       'error_code' => $errorCode,
       'error_data' => $errorData,
     );