Description of problem:

The documentation for the Tech Radar customization appears to have a dead link - https://raw.githubusercontent.com/redhat-developer/rhdh/release-1.7/packages/app/public/tech-radar/data-default.json

Documentation URL: 

https://docs.redhat.com/en/documentation/red_hat_developer_hub/1.7/html/customizing_[…]c-customizing-the-tech-radar-page_customizing-the-quickstarts

Actual results:

Right now, the link directs to a 404 error

Expected results:

The link should direct to a json that could be used with Tech Radar

Additional info (Such as Logs, Screenshots, etc):

The url will also need to updated within the following repo: https://github.com/redhat-developer/red-hat-developers-documentation-rhdh/blob/rel[…]/proc-customizing-the-tech-radar-page-by-using-a-json-file.adoc