Update README.md

Author: RomanHotsiy

README.md

@@ -61,7 +61,7 @@ Graph
 Data Structures
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-[**Inverted index**](https://github.com/RomanGotsiy/LearningJava/blob/master/Data%20Structures/InvertedIndex.java.java) - An [Inverted Index](http://en.wikipedia.org/wiki/Inverted_index) is a data structure used to create full text search. Given a set of text files, implement a program to create an inverted index. Also create a user interface to do a search using that inverted index which returns a list of files that contain the query term / terms. The search index can be in memory.
+[**Inverted index**](https://github.com/RomanGotsiy/LearningJava/blob/master/Data Structures/InvertedIndex.java.java) - An [Inverted Index](http://en.wikipedia.org/wiki/Inverted_index) is a data structure used to create full text search. Given a set of text files, implement a program to create an inverted index. Also create a user interface to do a search using that inverted index which returns a list of files that contain the query term / terms. The search index can be in memory.
 
 Classic Algorithms
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