Fix manifest permissions

manifest.toml

@@ -81,7 +81,7 @@ ram.runtime = "50M" # FIXME: replace with an **estimate** minimum ram requiremen
 
     [resources.permissions]
     main.url = "/"
-    mani.allowed = "admins"
+    main.allowed = "admins"
 
     [resources.ports]
     main.default = 4711