[FIX] Typo in doc fixed. Wrong url.

Author: Gonzalo Diaz

docs/hackerrank/interview_preparation_kit/greedy_algorithms/angry-children.md

@@ -1,8 +1,8 @@
 
-# [Greedy Algorithms: Greedy Florist](https://www.hackerrank.com/challenges/greedy-florist)
+# [Greedy Algorithms: Max Min](https://www.hackerrank.com/challenges/angry-children)
 
 - Difficulty:  `#medium`
-- Category: `#ProblemSolvingBasic`
+- Category: `#ProblemSolvingBasic` `#greedy`
 
 You will be given a list of integers, `arr`, and a single integer `k`.
 You must create an array of length `k` from elements of `arr` such that