Update README with LeetCode Daily Challenge

Author: jeremymanning

README.md

@@ -341,6 +341,7 @@ _**Note:** Our group is currently taking a break from grinding leetcode. The tab
 | May 24, 2025 | [2942](https://leetcode.com/problems/find-words-containing-character/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2942) | 🟢 Easy |
 | May 25, 2025 | [2131](https://leetcode.com/problems/longest-palindrome-by-concatenating-two-letter-words/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2131) | 🟡 Medium |
 | May 26, 2025 | [1857](https://leetcode.com/problems/largest-color-value-in-a-directed-graph/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/1857) | 🔴 Hard |
+| May 27, 2025 | [2894](https://leetcode.com/problems/divisible-and-non-divisible-sums-difference/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2894) | 🟢 Easy |
 
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