Merge pull request #2548 from thaJeztah/19.03_backport_fix_dockerd_api_link

[19.03 backport] docs: fix broken link in dockerd.md
Upstream-commit: 9cc05b9cec25858a1f673365b6e0e767e1f81118
Component: cli

Author: silvin-lubecki

components/cli/docs/reference/commandline/dockerd.md

@@ -121,7 +121,7 @@ the `daemon.json` file.
 
 ### Daemon socket option
 
-The Docker daemon can listen for [Docker Engine API](../api/)
+The Docker daemon can listen for [Docker Engine API](https://docs.docker.com/engine/api/)
 requests via three different types of Socket: `unix`, `tcp`, and `fd`.
 
 By default, a `unix` domain socket (or IPC socket) is created at