Update

problems/0474.一和零.md

@@ -193,7 +193,7 @@ class Solution {
 ```
 
 Python：
-```python3
+```python
 class Solution:
     def findMaxForm(self, strs: List[str], m: int, n: int) -> int:
         dp = [[0] * (n + 1) for _ in range(m + 1)]	# 默认初始化0