Add key to list

Author: nicorithner

react-todos/src/components/TodoTable.js

@@ -13,6 +13,7 @@ export default function TodoTable(props) {
       <tbody>
         {props.todos.map((todo) => (
           <TodoRowItem
+            key={todo.rowNumber}
             rowNumber={todo.rowNumber}
             rowDescription={todo.rowDescription}
             rowAssigned={todo.rowAssigned}