Update description comments for some config fields

config/default.json5

@@ -51,7 +51,10 @@
         validity_period: 20,
     },
     auth: {
-        approval_mode: false, // Registered accounts need to be approved by an administrator
+        // If true, registered accounts need to be approved by an administrator
-        name_change_wait_period: 2592000000, // 30 days
+        approval_mode: false,
+
+        // 30 days
+        name_change_wait_period: 2592000000,
     },
 }