fix: correct createMemo.md

Author: chengruilin

Diff for: docs/createMemo.md

@@ -10,8 +10,8 @@ which receives the same arguments and returns the same result as the original fu
 import {createMemo} from 'react-use';
 
 const fibonacci = n => {
-  if (n === 0) return 1;
-  if (n === 1) return 2;
+  if (n === 0) return 0;
+  if (n === 1) return 1;
   return fibonacci(n - 1) + fibonacci(n - 2);
 };