update xutil lib

README.md

@@ -16,6 +16,8 @@ go get github.com/mix-go/xutil
 
 执行一个http请求。
 
+Execute an http request.
+
 ```go
 http.Request(method string, u string, body string, opts ...Options) ([]byte, error)
 ```
@@ -26,12 +28,16 @@ http.RequestString(method string, u string, body string, opts ...Options) (strin
 
 搜索数组中是否存在指定的值。
 
+Searches if the specified value exists in the array.
+
 ```go
 slices.InArray[T comparable](item T, slice []T) bool
 ```
 
 用于检测变量是否为数字或数字字符串。
 
+Used to check if the variable is a number or a numeric string.
+
 ```go
 strings.IsNumeric(s string) bool
 ```