Update README_EN.md

Author: yanglbme

solution/0000-0099/0002.Add Two Numbers/README_EN.md

@@ -493,6 +493,7 @@ proc addTwoNumbers(l1: var SinglyLinkedList, l2: var SinglyLinkedList): SinglyLi
 #### C
 
 ```c
+
 /**
  * Definition for singly-linked list.
  * struct ListNode {
@@ -501,39 +502,35 @@ proc addTwoNumbers(l1: var SinglyLinkedList, l2: var SinglyLinkedList): SinglyLi
  * };
  */
 
-struct ListNode *addTwoNumbers(struct ListNode *l1, struct ListNode *l2)
-{
-    struct ListNode *dummy = (struct ListNode *)malloc(sizeof(struct ListNode));
+struct ListNode* addTwoNumbers(struct ListNode* l1, struct ListNode* l2) {
+    struct ListNode* dummy = (struct ListNode*) malloc(sizeof(struct ListNode));
     dummy->val = 0;
     dummy->next = NULL;
-    struct ListNode *curr = dummy;
+    struct ListNode* curr = dummy;
     int carry = 0;
 
-    while (l1 != NULL || l2 != NULL || carry != 0)
-    {
+    while (l1 != NULL || l2 != NULL || carry != 0) {
         int sum = carry;
-        if (l1 != NULL)
-        {
+        if (l1 != NULL) {
             sum += l1->val;
             l1 = l1->next;
         }
-        if (l2 != NULL)
-        {
+        if (l2 != NULL) {
             sum += l2->val;
             l2 = l2->next;
         }
 
         carry = sum / 10;
         int val = sum % 10;
 
-        struct ListNode *newNode = (struct ListNode *)malloc(sizeof(struct ListNode));
+        struct ListNode* newNode = (struct ListNode*) malloc(sizeof(struct ListNode));
         newNode->val = val;
         newNode->next = NULL;
         curr->next = newNode;
         curr = curr->next;
     }
 
-    struct ListNode *result = dummy->next;
+    struct ListNode* result = dummy->next;
     free(dummy);
     return result;
 }