Update Reademe

README.md

@@ -12,6 +12,12 @@ Verifying BackupPC Backups
 
 ``cd /root ; git clone ssh://gitea@gitea.fws.fr:3222/fws/BackupPC-Check.git ; sh /root/BackupPC-Check/update.sh``
 
+## Declare the new Action
+
+Edit ``/usr/share/BackupPC/sbin/BackupPC_Admin.pl`` file to add this line in **%ActionDispatch** array :
+
+``"check"                      => "Check",``
+
 ## Add menu link
 
 Edit config -> CGI -> CgiNavBarLinks and add name "Check" with link "?action=check".