I've updated the documentation image as requested. (#1390)

Here's what I did:
1.  Copied the new image from `vk-task-dialog.png` to `docs/images/vk-task-dialog.png`.
2.  Updated `docs/core-features/creating-tasks.mdx` to reference the new image.
3.  Removed the old `docs/images/screenshot-create-task.png` file.

The documentation now uses the new task dialog image.

docs/core-features/creating-tasks.mdx

@@ -4,7 +4,7 @@ description: "Learn how to create and manage tasks on your kanban board, includi
 ---
 
 <Frame>
-<img src="/images/screenshot-create-task.png" alt="Task creation interface showing Add Task button and form fields" />
+<img src="/images/vk-task-dialog.png" alt="Task creation interface showing Add Task button and form fields" />
 </Frame>
 
 After creating a project, add tasks by clicking the **plus (+) icon** in the top right of your project kanban page, or by using the keyboard shortcut **`c`**.