external user app: Add note to enable it first

diff --git a/config/config.sample.php b/config/config.sample.php
index 2513a2658ad41a2455a5ff68a46cd92ce8752a12..0f8abb5d5e56c1f6c0f882c5d00aeb91b1bf51cd 100644 (file)
--- a/config/config.sample.php
+++ b/config/config.sample.php
@@ -229,9 +229,9 @@ $CONFIG = array(
 'skeletondirectory' => '',
 
 /**
- * The ``user_backends`` app allows you to configure alternate authentication
- * backends. Supported backends are IMAP (OC_User_IMAP), SMB (OC_User_SMB), and
- * FTP (OC_User_FTP).
+ * The ``user_backends`` app (which needs to be enabled first) allows you to
+ * configure alternate authentication backends. Supported backends are:
+ * IMAP (OC_User_IMAP), SMB (OC_User_SMB), and FTP (OC_User_FTP).
  */
 'user_backends' => array(
        array(