Fix epmd link

Author: sabiwara

lib/elixir/pages/mix-and-otp/distributed-tasks.md

@@ -15,7 +15,7 @@ The router will check the first byte of the bucket name against the table and di
 
 If the matching entry points to the node evaluating the request, then we've finished routing, and this node will perform the requested operation. If the matching entry points to a different node, we'll pass the request to said node, which will look at its own routing table (which may be different from the one in the first node) and act accordingly. If no entry matches, an error will be raised.
 
-> Note: we will be using two nodes in the same machine throughout this chapter. You are free to use two (or more) different machines on the same network but you need to do some prep work. First of all, you need to ensure all machines have a `~/.erlang.cookie` file with exactly the same value. Then you need to guarantee [epmd](http://www.erlang.org/doc/man/epmd.html) is running on a port that is not blocked (you can run `epmd -d` for debug info).
+> Note: we will be using two nodes in the same machine throughout this chapter. You are free to use two (or more) different machines on the same network but you need to do some prep work. First of all, you need to ensure all machines have a `~/.erlang.cookie` file with exactly the same value. Then you need to guarantee [epmd](https://www.erlang.org/doc/apps/erts/epmd_cmd) is running on a port that is not blocked (you can run `epmd -d` for debug info).
 
 ## Our first distributed code