Links of "Learn more" and "Token bucket algorithm" on rate Limit feature page go to "no page found"

Issue Summary

The redirect of Bitbucket 6.7.2 on the rate limit setting page for documentation on how to use rate limit are going to page not found.
http://<bitbucket base URL>/admin/rate-limit

Steps to Reproduce

• Logged as an admin on bitbucket, go to http://<bitbucket base URL>/admin/rate-limit
• Click any of the hyperlinks("Learn more" and "Token bucket algorithm")
• The page which open has "page not found"
  

Expected Results

Open the Rate Limit available documentation, we believe that would be the correct one:
https://confluence.atlassian.com/bitbucketserver/improving-instance-stability-with-rate-limiting-976171954.html

Actual Results

The user is redirected to a page that do not exist.

Workaround

Access the Page: https://confluence.atlassian.com/bitbucketserver/improving-instance-stability-with-rate-limiting-976171954.html