[BUG] faq.md not found

[Favor-Panth]

Describe the bug
Link in https://github.com/DP6/Marketing-Attribution-Models/blob/72933d9835b334208c561fdfcb370ae1a1b406b4/CONTRIBUTING.md to frequently asked questions leads to 404
(https://github.com/DP6/Marketing-Attribution-Models/blob/72933d9835b334208c561fdfcb370ae1a1b406b4/docs/faq.md)

To Reproduce
Steps to reproduce the behavior:

1. Go to https://github.com/DP6/Marketing-Attribution-Models/blob/72933d9835b334208c561fdfcb370ae1a1b406b4/CONTRIBUTING.md
2. Click on Review Frequently Asked Questions.
3. See error

Expected behavior
Expected to see FAQ.