Issue with page: custom_javascript.rst files examples link to edX

[Apgomeznext]

Filename

educators/references/course_development/exercise_tools /custom_javascript.rst

What persona(s) does this page touch? (skip if you don't know)

Educators

What is broken about this file?

The steps on this page need to be tested

Provide any extra details, such as LMS version, specifics of what's broken, or suggested remediation steps.

This document has several links to download example files for a JavaScript Input Example Problem example that direct to edX files. Do we have any similar examples in the Open edX files?