cPanel Credentials Fix

[godsgood33]

Checklist

• Have you pulled and found the error with jc21/nginx-proxy-manager:latest docker image?
  • Yes
• Are you sure you're not using someone else's docker image?
  • Yes
• Have you searched for similar issues (both open and closed)?
  • Yes

Describe the bug
I was having problems getting Certbot to complete the DNS Challenge for a wildcard domain. I was using cPanel since my DNS provider is not listed in the dropdown. I was able to locate "Manage API Tokens" on my version of cPanel (v118). After creating a token, I copied that to the "Credentials File Contents" box adding a line for "cpanel_api_token = {token}", updated the other credentials and it worked! Please add this line to the template for people to fill out and update documentation.

Nginx Proxy Manager Version
2.12.3