docs: use "console" code-hint for shell examples

This replaces the use of bash where suitable, to allow easier copy/pasting
of shell examples without copying the prompt or process output.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docs/deprecated.md

@@ -589,9 +589,9 @@ Log tags are now generated in a standard way across different logging drivers.
 Because of which, the driver specific log tag options `syslog-tag`, `gelf-tag` and
 `fluentd-tag` have been deprecated in favor of the generic `tag` option.
 
-```bash
+```console
 {% raw %}
-docker --log-driver=syslog --log-opt tag="{{.ImageName}}/{{.Name}}/{{.ID}}"
+$ docker --log-driver=syslog --log-opt tag="{{.ImageName}}/{{.Name}}/{{.ID}}"
 {% endraw %}
 ```