some corrections

subjects/addlinkednumbers.en.md

@@ -44,8 +44,7 @@ import (
 )
 
 func pushFront(node *NodeAddL, num int) *NodeAddL {
-	// ...
-	// Write yourself
+
 }
 
 func main() {

subjects/changeorder.en.md

@@ -68,7 +68,7 @@ func main() {
 Its output:
 
 ```console
-$> go build
-$> ./main
+$ go build
+$ ./main
 1 -> 3 -> 5 -> 2 -> 4
 ```

subjects/merge.en.md

@@ -66,7 +66,6 @@ Here is a possible program to test your function :
 ```go
 package main
 
-
 func main() {
   mergedTree := &TreeNodeM{}
   t1 := NewRandTree()

subjects/reverse.en.md

@@ -62,7 +62,6 @@ func main() {
     }
     fmt.Println()
 }
-
 ```
 
 Its output: