fix: button dark theme styling

src/routes/+page.svelte

@@ -935,7 +935,7 @@
 																</button>
 
 																<button
-																	class=" px-4 py-2.5 hover:bg-gray-100 dark:bg-gray-800 dark:hover:bg-gray-700 text-gray-700 transition outline outline-1 outline-gray-200 dark:outline-gray-600 rounded-lg"
+																	class=" px-4 py-2.5 hover:bg-gray-100 dark:bg-gray-800 dark:hover:bg-gray-700 text-gray-700 dark:text-gray-100 transition outline outline-1 outline-gray-200 dark:outline-gray-600 rounded-lg"
 																	on:click={() => {
 																		cancelEditMessage(messageIdx);
 																	}}