[404] Page not found: https://github.com/nf-core/test-datasets/blob/master/docs/ADD_NEW_DATA.md

[razmia02]

Describe the bug
The hyperlink pointing to the test data guidelines/workflow documentation inside the nf-core/test-datasets/ADD_NEW_DATA.md repository is broken and returns a 404 error page.

To Reproduce
Steps to reproduce the behavior:

1. Go to the docs/ADD_NEW_DATA.md repository.
2. Scroll down to the Adding New Data section in the README.
3. Click on the word hyperlink "guidelines" at the end of the sentence: "Check your proposed test data follows the guidelines"
4. See 404 error page.

Expected behavior
The link should successfully redirect the contributor to the active nf-core specifications documentation for test data.

Browser (please complete the following information):

• OS: [e.g. macOS, Windows]
• Browser: [e.g. chrome, safari]
• Version: [e.g. 124]