Update README.md

Author: justcoding121

README.md

@@ -95,9 +95,9 @@ Note: It is observed that among the implementations here in practice, with the e
 
 #### Queryable Trees
 
-- [X] Multi-dimensional Interval Tree ([Implementation](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms/DataStructures/Tree/IntervalTree.cs) | [Tests](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms.Tests/DataStructures/Tree/IntervalTree_Tests.cs)) using multi-level Red-black tree
+- [X] Multi-dimensional Interval Tree ([Implementation](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms/DataStructures/Tree/IntervalTree.cs) | [Tests](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms.Tests/DataStructures/Tree/IntervalTree_Tests.cs)) using nested Red-black tree
 - [X] Multi-dimensional Kd Tree ([Implementation](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms/DataStructures/Tree/K_DTree.cs) | [Tests](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms.Tests/DataStructures/Tree/KdTree_Tests.cs)) for range and nearest neigbour queries
-- [X] Multi-dimensional Range Tree ([Implementation](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms/DataStructures/Tree/RangeTree.cs) | [Tests](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms.Tests/DataStructures/Tree/RangeTreeTests.cs))
+- [X] Multi-dimensional Range Tree ([Implementation](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms/DataStructures/Tree/RangeTree.cs) | [Tests](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms.Tests/DataStructures/Tree/RangeTreeTests.cs)) using nested Red-black tree
 - [X] Segment Tree ([Implementation](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms/DataStructures/Tree/SegmentTree.cs) | [Tests](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms.Tests/DataStructures/Tree/SegmentTree_Tests.cs))
 - [X] Binary Indexed Tree (Fenwick tree) ([Implementation](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms/DataStructures/Tree/FenwickTree.cs) | [Tests](https://github.com/justcoding121/Advanced-Algorithms/tree/develop/Advanced.Algorithms.Tests/DataStructures/Tree/FenwickTree_Tests.cs))