fix readme

Author: yennanliu

README.md

@@ -287,7 +287,7 @@
 840 | [Magic Squares In Grid](https://leetcode.com/problems/magic-squares-in-grid/) | [Python](./leetcode_python/Array/magic-squares-in-grid.py) | _O(m * n)_ | _O(1)_ | Easy |`complex`| AGAIN (not start)
 842 | [Split Array into Fibonacci Sequence](https://leetcode.com/problems/split-array-into-fibonacci-sequence/) | [Python](./leetcode_python/Array/split-array-into-fibonacci-sequence.py) | _O(n^3)_ | _O(n)_ | Medium |check `# 306 Addictive Number`, `basic`, `dfs`, `fibonacci`| AGAIN* (not start)
 845 | [Longest Mountain in Array](https://leetcode.com/problems/longest-mountain-in-array/) | [Python](./leetcode_python/Array/longest-mountain-in-array.py) | _O(n)_ | _O(1)_ | Medium |`basic`, `trick`| AGAIN* (not start) 
-849 | [Maximize Distance to Closest Person](https://leetcode.com/problems/maximize-distance-to-closest-person/) | [Python](./leetcode_python/Array/maximize-distance-to-closest-person.py), [Java](./leetcode_java/src/main/java/LeetCodeJava/Array/MaximizeDistanceToClosestPerson.java) | _O(n)_ | _O(1)_ | Easy |`basic`, google, 2 pointers| AGAIN (1)
+849 | [Maximize Distance to Closest Person](https://leetcode.com/problems/maximize-distance-to-closest-person/) | [Python](./leetcode_python/Array/maximize-distance-to-closest-person.py), [Java](./leetcode_java/src/main/java/LeetCodeJava/Array/MaximizeDistanceToClosestPerson.java) | _O(n)_ | _O(1)_ | Medium |`basic`, google, 2 pointers| AGAIN (1)
 860 | [Lemonade Change](https://leetcode.com/problems/lemonade-change/) | [Python](./leetcode_python/Array/lemonade-change.py) | _O(n)_ | _O(1)_ | Easy |amazon| OK* (2)
 0868 | [Transpose Matrix](https://leetcode.com/problems/transpose-matrix/) | [Python](./leetcode_python/Array/transpose-matrix.py) | _O(r * c)_ | _O(1)_ | Easy |`basic`| OK*
 885 | [Spiral Matrix III](https://leetcode.com/problems/spiral-matrix-iii/) | [Python](./leetcode_python/Array/spiral-matrix-iii.py) | _O(max(m, n)^2)_ | _O(1)_ | Medium  |`basic`| AGAIN* (not start)