Merge pull request #7514 from phemmer/cli_cmd_prefix_fix

fix command output examples in cli documentation

docs/sources/reference/commandline/cli.md

@@ -499,7 +499,7 @@ by default.
     <none>                        <none>              77af4d6b9913        19 hours ago        1.089 GB
     committest                    latest              b6fa739cedf5        19 hours ago        1.089 GB
     <none>                        <none>              78a85c484f71        19 hours ago        1.089 GB
-    $ docker                        latest              30557a29d5ab        20 hours ago        1.089 GB
+    docker                        latest              30557a29d5ab        20 hours ago        1.089 GB
     <none>                        <none>              0124422dd9f9        20 hours ago        1.089 GB
     <none>                        <none>              18ad6fad3402        22 hours ago        1.082 GB
     <none>                        <none>              f9f1e26352f0        23 hours ago        1.089 GB
@@ -513,7 +513,7 @@ by default.
     <none>                        <none>              77af4d6b9913e693e8d0b4b294fa62ade6054e6b2f1ffb617ac955dd63fb0182   19 hours ago        1.089 GB
     committest                    latest              b6fa739cedf5ea12a620a439402b6004d057da800f91c7524b5086a5e4749c9f   19 hours ago        1.089 GB
     <none>                        <none>              78a85c484f71509adeaace20e72e941f6bdd2b25b4c75da8693efd9f61a37921   19 hours ago        1.089 GB
-    $ docker                        latest              30557a29d5abc51e5f1d5b472e79b7e296f595abcf19fe6b9199dbbc809c6ff4   20 hours ago        1.089 GB
+    docker                        latest              30557a29d5abc51e5f1d5b472e79b7e296f595abcf19fe6b9199dbbc809c6ff4   20 hours ago        1.089 GB
     <none>                        <none>              0124422dd9f9cf7ef15c0617cda3931ee68346455441d66ab8bdc5b05e9fdce5   20 hours ago        1.089 GB
     <none>                        <none>              18ad6fad340262ac2a636efd98a6d1f0ea775ae3d45240d3418466495a19a81b   22 hours ago        1.082 GB
     <none>                        <none>              f9f1e26352f0a3ba6a0ff68167559f64f3e21ff7ada60366e2d44a04befd1d3a   23 hours ago        1.089 GB