refactor(docs): 调整 composer 的 description

Author: 苏青安

composer.json

@@ -1,6 +1,6 @@
 {
   "name": "hejunjie/trade-splitter",
-  "description": "一个灵活的PHP交易利润分配器，支持多种策略（百分比、固定值等）| A flexible PHP trade profit splitter supporting multiple strategies (percentage, fixed, etc.)",
+  "description": "一个灵活、可扩展的交易/利润分账组件，提供百分比、固定金额、阶梯与递归分账等内置策略，并支持注册自定义策略 | A flexible and scalable transaction/profit sharing component, offering built-in strategies such as percentage, fixed amount, tiered, and recursive sharing, and supporting the registration of custom strategies",
   "type": "library",
   "license": "MIT",
   "autoload": {