diff --git a/docs/convertor.md b/docs/convertor.md
index 565915f..767bf7d 100644
--- a/docs/convertor.md
+++ b/docs/convertor.md
@@ -608,16 +608,16 @@ import (
 
 func main() {
     val := reflect.ValueOf("abc")
-	iVal, ok := convertor.ToInterface(val)
+    iVal, ok := convertor.ToInterface(val)
 
-	fmt.Printf("%T\n", iVal)
-	fmt.Printf("%v\n", iVal)
-	fmt.Println(ok)
+    fmt.Printf("%T\n", iVal)
+    fmt.Printf("%v\n", iVal)
+    fmt.Println(ok)
 
-	// Output:
-	// string
-	// abc
-	// true    
+    // Output:
+    // string
+    // abc
+    // true    
 }
 ```
 
diff --git a/docs/convertor_zh-CN.md b/docs/convertor_zh-CN.md
index 0661461..db0c07f 100644
--- a/docs/convertor_zh-CN.md
+++ b/docs/convertor_zh-CN.md
@@ -608,16 +608,16 @@ import (
 
 func main() {
     val := reflect.ValueOf("abc")
-	iVal, ok := convertor.ToInterface(val)
+    iVal, ok := convertor.ToInterface(val)
 
-	fmt.Printf("%T\n", iVal)
-	fmt.Printf("%v\n", iVal)
-	fmt.Println(ok)
+    fmt.Printf("%T\n", iVal)
+    fmt.Printf("%v\n", iVal)
+    fmt.Println(ok)
 
-	// Output:
-	// string
-	// abc
-	// true    
+    // Output:
+    // string
+    // abc
+    // true    
 }
 ```
 
diff --git a/docs/datetime.md b/docs/datetime.md
index 30deea6..0a74886 100644
--- a/docs/datetime.md
+++ b/docs/datetime.md
@@ -199,18 +199,18 @@ import (
 func main() {
     now := time.Now()
 
-	after1Year := datetime.AddYear(now, 1)
-	diff1 := after1Year.Sub(now)
+    after1Year := datetime.AddYear(now, 1)
+    diff1 := after1Year.Sub(now)
 
-	before1Year := datetime.AddYear(now, -1)
-	diff2 := before1Year.Sub(now)
+    before1Year := datetime.AddYear(now, -1)
+    diff2 := before1Year.Sub(now)
 
-	fmt.Println(diff1)
-	fmt.Println(diff2)
+    fmt.Println(diff1)
+    fmt.Println(diff2)
 
-	// Output:
-	// 8760h0m0s
-	// -8760h0m0s
+    // Output:
+    // 8760h0m0s
+    // -8760h0m0s
 }
 ```
 
diff --git a/docs/datetime_zh-CN.md b/docs/datetime_zh-CN.md
index b0636a2..1a1a619 100644
--- a/docs/datetime_zh-CN.md
+++ b/docs/datetime_zh-CN.md
@@ -200,18 +200,18 @@ import (
 func main() {
     now := time.Now()
 
-	after1Year := datetime.AddYear(now, 1)
-	diff1 := after1Year.Sub(now)
+    after1Year := datetime.AddYear(now, 1)
+    diff1 := after1Year.Sub(now)
 
-	before1Year := datetime.AddYear(now, -1)
-	diff2 := before1Year.Sub(now)
+    before1Year := datetime.AddYear(now, -1)
+    diff2 := before1Year.Sub(now)
 
-	fmt.Println(diff1)
-	fmt.Println(diff2)
+    fmt.Println(diff1)
+    fmt.Println(diff2)
 
-	// Output:
-	// 8760h0m0s
-	// -8760h0m0s
+    // Output:
+    // 8760h0m0s
+    // -8760h0m0s
 }
 ```
 
diff --git a/docs/function.md b/docs/function.md
index d295b51..c6dfd76 100644
--- a/docs/function.md
+++ b/docs/function.md
@@ -323,16 +323,16 @@ import (
 
 func main() {
     addOne := func(x interface{}) interface{} {
-		return x.(int) + 1
-	}
-	double := func(x interface{}) interface{} {
-		return 2 * x.(int)
-	}
-	square := func(x interface{}) interface{} {
-		return x.(int) * x.(int)
-	}
+        return x.(int) + 1
+    }
+    double := func(x interface{}) interface{} {
+        return 2 * x.(int)
+    }
+    square := func(x interface{}) interface{} {
+        return x.(int) * x.(int)
+    }
 
-	f := function.Pipeline(addOne, double, square)
+    f := function.Pipeline(addOne, double, square)
 
     result := fn(2)
 
diff --git a/docs/function_zh-CN.md b/docs/function_zh-CN.md
index caad855..a8e15bb 100644
--- a/docs/function_zh-CN.md
+++ b/docs/function_zh-CN.md
@@ -322,16 +322,16 @@ import (
 
 func main() {
     addOne := func(x interface{}) interface{} {
-		return x.(int) + 1
-	}
-	double := func(x interface{}) interface{} {
-		return 2 * x.(int)
-	}
-	square := func(x interface{}) interface{} {
-		return x.(int) * x.(int)
-	}
+        return x.(int) + 1
+    }
+    double := func(x interface{}) interface{} {
+        return 2 * x.(int)
+    }
+    square := func(x interface{}) interface{} {
+        return x.(int) * x.(int)
+    }
 
-	f := function.Pipeline(addOne, double, square)
+    f := function.Pipeline(addOne, double, square)
 
     result := fn(2)
 
diff --git a/docs/netutil.md b/docs/netutil.md
index d818765..2956b25 100644
--- a/docs/netutil.md
+++ b/docs/netutil.md
@@ -658,24 +658,24 @@ import (
 func main() {
     url := "https://jsonplaceholder.typicode.com/todos"
     header := map[string]string{
-		"Content-Type": "application/x-www-form-urlencoded",
-		// "Content-Type": "multipart/form-data",
-	}
+        "Content-Type": "application/x-www-form-urlencoded",
+        // "Content-Type": "multipart/form-data",
+    }
 
-	postData := url.Values{}
-	postData.Add("userId", "1")
-	postData.Add("title", "TestToDo")
+    postData := url.Values{}
+    postData.Add("userId", "1")
+    postData.Add("title", "TestToDo")
 
-	// postData := make(map[string]string)
-	// postData["userId"] = "1"
-	// postData["title"] = "title"
+    // postData := make(map[string]string)
+    // postData["userId"] = "1"
+    // postData["title"] = "title"
 
-	resp, err := netutil.HttpPost(apiUrl, header, nil, postData)
-	if err != nil {
-		log.Fatal(err)
-	}
-	body, _ := io.ReadAll(resp.Body)
-	t.Log("response: ", resp.StatusCode, string(body))
+    resp, err := netutil.HttpPost(apiUrl, header, nil, postData)
+    if err != nil {
+        log.Fatal(err)
+    }
+    body, _ := io.ReadAll(resp.Body)
+    t.Log("response: ", resp.StatusCode, string(body))
 }
 ```
 
diff --git a/docs/netutil_zh-CN.md b/docs/netutil_zh-CN.md
index 9d2e996..ea3e687 100644
--- a/docs/netutil_zh-CN.md
+++ b/docs/netutil_zh-CN.md
@@ -657,23 +657,23 @@ import (
 func main() {
     url := "https://jsonplaceholder.typicode.com/todos"
     header := map[string]string{
-		"Content-Type": "application/x-www-form-urlencoded",
-		// "Content-Type": "multipart/form-data",
-	}
+        "Content-Type": "application/x-www-form-urlencoded",
+        // "Content-Type": "multipart/form-data",
+    }
 
-	postData := url.Values{}
-	postData.Add("userId", "1")
-	postData.Add("title", "TestToDo")
+    postData := url.Values{}
+    postData.Add("userId", "1")
+    postData.Add("title", "TestToDo")
 
-	// postData := make(map[string]string)
-	// postData["userId"] = "1"
-	// postData["title"] = "title"
+    // postData := make(map[string]string)
+    // postData["userId"] = "1"
+    // postData["title"] = "title"
 
-	resp, err := netutil.HttpPost(apiUrl, header, nil, postData)
-	if err != nil {
-		log.Fatal(err)
-	}
-	body, _ := io.ReadAll(resp.Body)
+    resp, err := netutil.HttpPost(apiUrl, header, nil, postData)
+    if err != nil {
+        log.Fatal(err)
+    }
+    body, _ := io.ReadAll(resp.Body)
     fmt.Println(body)
 }
 ```