update docs

docs/admin/setup/distributed.rst

@@ -619,6 +619,7 @@ These credentials are used to clone repositories via HTTPS. You must also add th
                     cleanup-schedule-minutes: 60                    # Schedule for container cleanup
                 build-agent:
                     short-name: "artemis-build-agent-X"             # Short name of the build agent. This should be unique for each build agent. Only lowercase letters, numbers and hyphens are allowed.
+                    display-name: "Artemis Build Agent X"           # This value is optional. If omitted, the short name will be used as display name. Display name of the build agent. This is shown in the Artemis UI.
 
 
 Please note that ``artemis.continuous-integration.build-agent.short-name`` must be provided. Otherwise, the build agent will not start.