diff --git a/README.md b/README.md
index 8241f8e..4fe1ca0 100644
--- a/README.md
+++ b/README.md
@@ -6,25 +6,26 @@ This is a method or function that I often use
 ## usage
 
 ```go
-func Template(source string, data map[string]string) string
+func Template(source string, data map[string]string, placeholder string) string
 ```
 - This function can perform template string substitution
 
+[see test case](utils_test.go#L10-L82)
 
 ```go
 func GetPathValue(raw string, realPath string) map[string]string
 ```
-- This string will directly get the value corresponding to the template [see test case](./utils/utils_test.go)
+- This string will directly get the value corresponding to the template [see test case](utils_test.go#L91-L100)
 
 ```go
 func (c *Cookie) NewCookie(cookie string, delimiter string, joiner string) *Cookie
 ```
-- This can parse the Cookie string or parse the Query string, you can specify separators and connectors for parsing [see test case](utils/utils_test.go#L22)
+- This can parse the Cookie string or parse the Query string, you can specify separators and connectors for parsing [see test case](utils_test.go#L22)
 
 
 ```go
 func Map2Struct(source map[string]any, bindingTarget any)
 ```
-- You can bind the value of the map to the structure, provided that the fields of the structure and the fields of the map are consistent in lowercase [see test case](./utils/utils_test.go#L40)
+- You can bind the value of the map to the structure, provided that the fields of the structure and the fields of the map are consistent in lowercase [see test case](utils_test.go#L102-L105)