anchor.diff:  [[discovery-file]]
   === File-Based Discovery Plugin
   
  -The file-based discovery plugin uses a list of hosts/ports in a `unicast_hosts.txt` file 
  +The file-based discovery plugin uses a list of hosts/ports in a `unicast_hosts.txt` file
   in the `config/discovery-file` directory for unicast discovery.
   
   [[discovery-file-install]]
  
positive.code: `discovery-file` directory to the `config` folder, and a default `unicast_hosts.txt`
  file that must be edited with the correct unicast hosts list before starting the node.
  
  [[discovery-file-remove]]
  [float]
  ==== Removal
  
negative.code: [2001:0db8:85a3:0000:0000:8a2e:0370:7334]:9301
  ----------------------------------------------------------------
  
  Host names are allowed instead of IP addresses (similar to
  `discovery.zen.ping.unicast.hosts`), and IPv6 addresses must be
  specified in brackets with the port coming after the brackets.
  