[PAGE ISSUE]: 'Deprecated API removed after v2.10'

[jimmyhappy19920308]

Page URL

https://docs.flutter.dev/release/breaking-changes/2-10-deprecations#renderobjectelement-methods

Page source

https://github.com/flutter/website/blob/main/src/release/breaking-changes/2-10-deprecations.md#renderobjectelement-methods

Describe the problem

Use deprecated api in sample code.

Expected fix

Migration guide

Code before migration:

element.insertChildRenderObject(child, slot);
element.moveChildRenderObject(child, slot);
element.removeChildRenderObject(child);

Code after migration:

element.insertRenderObjectChild(child, slot);
element.moveRenderObjectChild(child, oldSlot, newSlot);
element.removeRenderObjectChild(child, slot);

Additional context

No response