docs: update docs for rubocop

Author: dledda-r7

documentation/modules/exploit/linux/http/invoiceninja_unauth_rce_cve_2024_55555.md

@@ -12,13 +12,15 @@ The following release was tested.
 
 ## Installation steps to install Invoice Ninja on a self-hosted platform
 `wget https://github.com/invoiceninja/dockerfiles/archive/refs/tags/5.8.22.zip`
+
 `unzip 5.8.22.zip`
+
 `cd dockerfiles-5.8.22`
-Replace inside `docker-compose.yml` 
-FROM
-`image: invoiceninja/invoiceninja:5`
-TO
-`image: invoiceninja/invoiceninja:5.8.22`
+
+Replace inside `docker-compose.yml`
+
+FROM `image: invoiceninja/invoiceninja:5` TO `image: invoiceninja/invoiceninja:5.8.22`
+
 Replace in `env`
 `APP_KEY=base64:RR++yx2rJ9kdxbdh3+AmbHLDQu+Q76i++co9Y8ybbno=`