Merge pull request youngyangyang04#1865 from ZerenZhang2022/patch-7

Update 0279.完全平方数.md

Author: youngyangyang04

problems/0279.完全平方数.md

@@ -230,7 +230,7 @@ class Solution:
         # 遍历物品
         for num in nums:
             # 遍历背包
-            for j in range(num, n + 1)
+            for j in range(num, n + 1):
                 dp[j] = min(dp[j], dp[j - num] + 1)
         return dp[n]
 ```