feat: 优化计算器插件描述

src/main/java/cn/com/poc/thirdparty/resource/demand/ai/function/calculator/CalculatorFunction.java

@@ -26,7 +26,7 @@ public class CalculatorFunction extends AbstractLargeModelFunction {
             .name("calculator")
             .description(DESC)
             .parameters(new Parameters("object")
-                    .addProperties("arithmetic_expression", new Properties("string", "算术表达式,需要精确的算术表达式如6的平方为 6*6")))
+                    .addProperties("arithmetic_expression", new Properties("string", "算术表达式,需要精确的算术表达式如6的平方或6的2次方为 6*6，9的5次方为9*9*9*9*9")))
             .build();
 
     @Override