doc: updated guidance for n-api changes

Add js_native_api.h and js_native_api_types.h to the list
of files covered by the N-API guidance as these were
broken out of the files referenced.

Signed-off-by: Michael Dawson <michael_dawson@ca.ibm.com>

PR-URL: #32721
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>

Author: mhdawson

doc/guides/collaborator-guide.md

@@ -332,8 +332,8 @@ For pull requests introducing new core modules:
 ### Additions to N-API
 
 N-API provides an ABI-stable API guaranteed for future Node.js versions. N-API
-additions call for unusual care and scrutiny. If a change adds to `node_api.h`
-or `node_api_types.h`, consult [the relevant
+additions call for unusual care and scrutiny. If a change adds to `node_api.h`,
+`js_native_api.h`, `node_api_types.h`, or `js_native_api_types.h`, consult [the relevant
 guide](https://github.com/nodejs/node/blob/master/doc/guides/adding-new-napi-api.md).
 
 ### Deprecations