Update README.md

Author: dinhngocdung

fail2ban/README.md

@@ -1,6 +1,6 @@
 # Quick Start 
 ## 1. Download docker-compose.yml, .env, fail and filter:
-
+```bash
 mkdir -p ./fail2ban/filter.d/
 mkdir -p ./fail2ban/jail.d/
 
@@ -11,11 +11,13 @@ curl -o ./fail2ban/filter.d/nginx-req-limit.conf -L https://raw.githubuserconten
 curl -o ./fail2ban/filter.d/wp-login-fail.conf -L https://raw.githubusercontent.com/dinhngocdung/ee-container-stack/refs/heads/main/fail2ban/filter.d/wp-login-fail.conf
 
 curl -o ./fail2ban/jail.d/jail.local -L https://raw.githubusercontent.com/dinhngocdung/ee-container-stack/refs/heads/main/fail2ban/jail.d/jail.local
-
+```
 ## 2. Add your sites logs
+```bash
 vi ./fail2ban/docker-compose.yml
-
+```
 ## 3. Run
+```bash
 cd ./fail2ban/ && \
 sudo docker compose up -d
-
+```