fix readme

Author: AceCoooool

README.md

@@ -59,7 +59,7 @@ Working directory: youroot/algs4cplusplus/ch1
 | [-](https://algs4.cs.princeton.edu/21elementary/index.php#-) |          [BinaryInsertion.h](ch2/head/InsertionX.h)          |       binary insertion sort       | [2.2](https://algs4.cs.princeton.edu/21elementary/index.php#2.2) |             [Selection.h](ch2/head/InsertionX.h)             |        selection sort         |
 | [2.3](https://algs4.cs.princeton.edu/21elementary/index.php#2.3) | [Shell.java](https://algs4.cs.princeton.edu/21elementary/Shell.java.html) |             shellsort             | [2.4](https://algs4.cs.princeton.edu/22mergesort/index.php#2.4) | [Merge.java](https://algs4.cs.princeton.edu/22mergesort/Merge.java.html) |      top-down mergesort       |
 | [-](https://algs4.cs.princeton.edu/22mergesort/index.php#-)  |               [MergeBU.h](ch2/head/MergeBU.h)                |        bottom-up mergesort        | [-](https://algs4.cs.princeton.edu/22mergesort/index.php#-)  |                [MergeX.h](ch2/head/MergeX.h)                 |      optimized mergesort      |
-| [-](https://algs4.cs.princeton.edu/22mergesort/index.php#-)  | [Inversions.java](https://algs4.cs.princeton.edu/22mergesort/Inversions.java.html) |       number of inversions        | [2.5](https://algs4.cs.princeton.edu/23quicksort/index.php#2.5) |                 [Quick.h](ch2/head/Quick.h)                  |           quicksort           |
+| [-](https://algs4.cs.princeton.edu/22mergesort/index.php#-)  |            [Inversions.h](ch2/head/Inversions.h)             |       number of inversions        | [2.5](https://algs4.cs.princeton.edu/23quicksort/index.php#2.5) |                 [Quick.h](ch2/head/Quick.h)                  |           quicksort           |
 | [-](https://algs4.cs.princeton.edu/23quicksort/index.php#-)  |             [Quick3way.h](ch2/head/Quick3way.h)              | quicksort with 3-way partitioning | [-](https://algs4.cs.princeton.edu/23quicksort/index.php#-)  |                [QuickX.h](ch2/head/QuickX.h)                 |   optimized 2-way quicksort   |
 | [-](https://algs4.cs.princeton.edu/23quicksort/index.php#-)  |   [QuickBentleyMcIlroy.h](ch2/head/QuickBentleyMcIlroy.h)    |     optimized 3-way quicksort     |     [-](https://algs4.cs.princeton.edu/24pq/index.php#-)     |               [TopM.cpp](ch2/14_TopM/main.cpp)               |     priority queue client     |
 |   [2.6](https://algs4.cs.princeton.edu/24pq/index.php#2.6)   |                 [MaxPQ.h](ch2/head/MaxPQ.h)                  |      max heap priority queue      |     [-](https://algs4.cs.princeton.edu/24pq/index.php#-)     |                 [MinPQ.h](ch2/head/MinPQ.h)                  |    min heap priority queue    |