Update 0063.不同路径II.md

修正typescript方法2的函數名稱

Author: xCk27x

problems/0063.不同路径II.md

@@ -552,7 +552,7 @@ function uniquePathsWithObstacles(obstacleGrid: number[][]): number {
 
 // 版本二: dp改為使用一維陣列，從終點開始遍歷
 ```typescript
-function uniquePathsWithObstacles2(obstacleGrid: number[][]): number {
+function uniquePathsWithObstacles(obstacleGrid: number[][]): number {
   const m = obstacleGrid.length;
   const n = obstacleGrid[0].length;