docs: add command to delete db directories

Author: damiramirez

tooling/l2/dev/README.md

@@ -4,20 +4,25 @@
 
 1. Download the docker compose 
 
+```shell
 curl -L https://raw.githubusercontent.com/lambdaclass/ethrex/main/tooling/l2/dev/docker-compose.yaml -o docker-compose.yaml
+```
 
 2. Start the containers
 
 ```shell
 docker compose up
 ```
 
-3. Stop the containers and delete the volumes
+3. Stop the containers and delete the databases
 
 > [!NOTE]
-> It is recommended to delete all the volumes because blockscout will keep the old state of the blockchain on its db
-> but ethrex l2 dev mode starts a new chain on every restart. For this reason we use the `-v` flag
+> It is recommended to delete all the databases related to the containers because blockscout will keep the old state of the blockchain on its db
+> but ethrex l2 dev mode starts a new chain on every restart.
 
 ```shell
-docker compose down -v
+docker compose down
 ```
+
+```shell
+rm -rf blockscout-db-data dets logs/ redis-data stats-db-data