Add custom type to LDoc config

docs/config.ld

@@ -4,4 +4,17 @@ format = "markdown"
 not_luadoc = true
 boilerplate = false
 
-file = "api.lua"
+file = {"settings.lua", "api.lua", "formspec.lua",}
+
+new_type("setting", "Settings")
+
+custom_tags = {
+	{
+		"settype",
+		title = "Type",
+	},
+	{
+		"default",
+		title = "Default value",
+	},
+}