update README

Author: myfreess

README.mbt.md

@@ -1,14 +1,5 @@
 # YAML
 
-A comprehensive YAML parsing and stringifying library for MoonBit, supporting YAML 1.2.x and common YAML 1.1 features.
+A comprehensive YAML parsing and stringifying library for MoonBit, supporting YAML 1.2.
 
-This library is ported from Deno std/yaml (js-yaml v3.13.1) and provides full-featured YAML processing capabilities including multiple schema types, flow and block styles, and custom parsing options.
-
-## Features
-
-- Parse YAML strings to MoonBit values  
-- Stringify MoonBit values to YAML
-- Multiple schema types (failsafe, json, core, default)
-- Flow and block styles support
-- Custom parsing and stringification options
-- Comprehensive error handling
+This library is ported from yaml-rust2.