added explanation

Author: micheldumontier

versions/smartapi-list.md

@@ -1,3 +1,4 @@
+smartAPI specific elements automatically generated from <a href="https://github.com/SmartAPI/smartAPI-Specification/blob/OpenAPI.next/versions/3.0.0.md">parent document</a>
 Object | Field | Recommendation | Datatype | Description
 ---|:---:|:---:|:---:|---
 <a href="https://github.com/SmartAPI/smartAPI-Specification/blob/OpenAPI.next/versions/3.0.0.md#oasObject">OpenAPI Object</a>|<a href="https://github.com/SmartAPI/smartAPI-Specification/blob/OpenAPI.next/versions/3.0.0.md#oasExternalResources">x-externalResources</a>||External Resource Object|A list of external resources pertinent to the API.

versions/smartapi-list.php

@@ -80,6 +80,7 @@ function getHeaderLink($label)
 // markdown
 $file = "smartapi-list.md";
 $fp = fopen($file,"w");
+fwrite($fp,"smartAPI specific elements automatically generated from <a href=\"$parent_doc\">parent document</a>".PHP_EOL);
 fwrite($fp,"Object | Field | Recommendation | Datatype | Description".PHP_EOL);
 fwrite($fp,"---|:---:|:---:|:---:|---".PHP_EOL);
 foreach($mylist AS $object => $o) {