Update Readme.md

Author: wisdompeak

Readme.md

@@ -172,7 +172,6 @@
 [480.Sliding-Window-Median](https://github.com/wisdompeak/LeetCode/blob/master/Heap/480.Sliding-Window-Median) (H) 
 [218.The-Skyline-Problem](https://github.com/wisdompeak/LeetCode/blob/master/Segment_Tree/218.The-Skyline-Problem) (H) 
 [699.Falling-Squares](https://github.com/wisdompeak/LeetCode/tree/master/Segment_Tree/699.Falling-Squares) (H) 
-[715.Range-Module](https://github.com/wisdompeak/LeetCode/tree/master/Segment_Tree/715.Range-Module) (H) 
 [729.My-Calendar-I](https://github.com/wisdompeak/LeetCode/tree/master/Heap/729.My-Calendar-I) (M) 
 [855.Exam-Room](https://github.com/wisdompeak/LeetCode/tree/master/Heap/855.Exam-Room) (M+) 
 [975.Odd-Even-Jump](https://github.com/wisdompeak/LeetCode/tree/master/Heap/975.Odd-Even-Jump) (H-) 
@@ -188,7 +187,10 @@
 [1912.Design-Movie-Rental-System](https://github.com/wisdompeak/LeetCode/tree/master/Heap/1912.Design-Movie-Rental-System) (M+) 
 2034.Stock Price Fluctuation (M) 
 [2071.Maximum-Number-of-Tasks-You-Can-Assign](https://github.com/wisdompeak/LeetCode/tree/master/Binary_Search/2071.Maximum-Number-of-Tasks-You-Can-Assign) (H) 
+```maintain intervals```
+[715.Range-Module](https://github.com/wisdompeak/LeetCode/tree/master/Segment_Tree/715.Range-Module) (H) 
 [2213.Longest-Substring-of-One-Repeating-Character](https://github.com/wisdompeak/LeetCode/new/master/Heap/2213.Longest-Substring-of-One-Repeating-Character) (H) 
+[2276.Count-Integers-in-Intervals](https://github.com/wisdompeak/LeetCode/tree/master/Heap/2276.Count-Integers-in-Intervals) (H-) 
 
 #### [Tree](https://github.com/wisdompeak/LeetCode/tree/master/Tree)
 [144.Binary-Tree-Preorder-Traversal](https://github.com/wisdompeak/LeetCode/tree/master/Tree/144.Binary-Tree-Preorder-Traversal) (M+)