update readme

Author: hogan-tech

README.md

@@ -44,7 +44,7 @@ The solutions are organized as follows:
 | 0015 | [3Sum](https://leetcode.com/problems/3sum/)                                                                                                                         | [Python](./0015-3sum/0015-3sum.py), [C++](./0015-3sum/0015-3sum.cpp)                                                                                                                                                                                                           | [Medium](./0015-3sum/README.md)                                                           |
 | 0017 | [Letter Combinations of a Phone Number](https://leetcode.com/problems/letter-combinations-of-a-phone-number/)                                                       | [Python](./0017-letter-combinations-of-a-phone-number/0017-letter-combinations-of-a-phone-number.py)                                                                                                                                                                           | [Medium](./0017-letter-combinations-of-a-phone-number/README.md)                          |
 | 0018 | [4Sum](https://leetcode.com/problems/4sum/)                                                                                                                         | [Python](./0018-4sum/0018-4sum.py)                                                                                                                                                                                                                                             | [Medium](./0018-4sum/README.md)                                                           |
-| 0019 | [Remove Nth Node From End of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)                                                                 | [C++](./0019-remove-nth-node-from-end-of-list/0019-remove-nth-node-from-end-of-list.cpp)                                                                                                                                                                                       | [Medium](./0019-remove-nth-node-from-end-of-list/README.md)                               |
+| 0019 | [Remove Nth Node From End of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)                                                                 | [Python](./0019-remove-nth-node-from-end-of-list/0019-remove-nth-node-from-end-of-list.py), [C++](./0019-remove-nth-node-from-end-of-list/0019-remove-nth-node-from-end-of-list.cpp)                                                                                           | [Medium](./0019-remove-nth-node-from-end-of-list/README.md)                               |
 | 0020 | [Valid Parentheses](https://leetcode.com/problems/valid-parentheses/)                                                                                               | [Python](./0020-valid-parentheses/0020-valid-parentheses.py), [C++](./0020-valid-parentheses/0020-valid-parentheses.cpp), [JavaScript](./0020-valid-parentheses/0020-valid-parentheses.js)                                                                                     | [Easy](./0020-valid-parentheses/README.md)                                                |
 | 0021 | [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)                                                                                     | [Python](./0021-merge-two-sorted-lists/0021-merge-two-sorted-lists.py), [C++](./0021-merge-two-sorted-lists/0021-merge-two-sorted-lists.cpp)                                                                                                                                   | [Easy](./0021-merge-two-sorted-lists/README.md)                                           |
 | 0022 | [Generate Parentheses](https://leetcode.com/problems/generate-parentheses/)                                                                                         | [Python](./0022-generate-parentheses/0022-generate-parentheses.py)                                                                                                                                                                                                             | [Medium](./0022-generate-parentheses/README.md)                                           |