fixing formatting

Author: h00die

documentation/modules/auxiliary/scanner/ftp/ftp_login.md

@@ -8,12 +8,14 @@ This module will test FTP logins on a range of machines and report successful lo
 
 1.  ```apt-get install vsftpd```
 2. Allow local users to log in and to allow ftp uploads by editing file `/etc/vsftpd.conf` uncommenting the following:
-```
+
+    ```
     local_enable=YES
     write_enable=YES
     chroot_list_enable=YES
     chroot_list_file=/etc/vsftpd.chroot_list
-```
+    ```
+
 3. Create the file `/etc/vsftpd.chroot_list` and add the local users you want allow to connect to FTP server. Start service and test connections:
 4. ```service vsftpd start```