Ensure prompt in console blocks follows Docker CLI standards

Signed-off-by: Brijeshthummar02 <brijeshthummar02@gmail.com>

Author: Brijeshthummar02

docs/reference/compose_kill.md

@@ -4,7 +4,7 @@
 Forces running containers to stop by sending a `SIGKILL` signal. Optionally the signal can be passed, for example:
 
 ```console
-docker compose kill -s SIGINT
+$ docker compose kill -s SIGINT
 ```
 
 ### Options
@@ -22,5 +22,5 @@ docker compose kill -s SIGINT
 Forces running containers to stop by sending a `SIGKILL` signal. Optionally the signal can be passed, for example:
 
 ```console
-docker compose kill -s SIGINT
+$ docker compose kill -s SIGINT
 ```