Fix missing missing backtick
@@ -158,7 +158,7 @@ The following example uses a template without headers and outputs the
$ docker node ls --format "{{.ID}}: {{.Hostname}} {{.TLSStatus}}"
e216jshn25ckzbvmwlnh5jr3g: swarm-manager1 Ready
35o6tiywb700jesrt3dmllaza: swarm-worker1 Needs Rotation
-``
+```
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