Update README with LeetCode Daily Challenge

Author: jeremymanning

README.md

@@ -225,6 +225,7 @@ _**Note:** Our group is currently taking a break from grinding leetcode. The tab
 | January 28, 2025 | [2658](https://leetcode.com/problems/maximum-number-of-fish-in-a-grid/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2658) | 🟡 Medium |
 | January 29, 2025 | [684](https://leetcode.com/problems/redundant-connection/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/684) | 🟡 Medium |
 | January 30, 2025 | [2493](https://leetcode.com/problems/divide-nodes-into-the-maximum-number-of-groups/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2493) | 🔴 Hard |
+| January 31, 2025 | [827](https://leetcode.com/problems/making-a-large-island/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/827) | 🔴 Hard |
 
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