Update 0001-1000.md

Author: kamyu104

0001-1000.md

@@ -16,7 +16,7 @@
 ## Solutions
 - [1001 - Latest](./README.md)
 
-## Algorithms
+## Topics
 
 * [Bit Manipulation](https://github.com/kamyu104/LeetCode-Solutions/blob/master/0001-1000.md#bit-manipulation)
 * [Array](https://github.com/kamyu104/LeetCode-Solutions/blob/master/0001-1000.md#array)