They're usually examples of Go-style text templates. But, Liquid templating is treating them as variable substitutions. E.g., in `engine/reference/commandline/ps.md`:
```bash
$ docker ps --filter volume=remote-volume --format "table {{.ID}}\t{{.Mounts}}"
```
is rendered as:
```bash
$ docker ps --filter volume=remote-volume --format "table \t"
```
Solution is to wrap entire files in `{% raw %} ... {% endraw %}` blocks.