Update the Acre badge (#925)

Closes AENG-170

We should not use the word staking, the new icon no longer uses it.

**Before**
<img width="300" alt="Screenshot 2024-12-13 at 09 33 47"
src="https://github.com/user-attachments/assets/3d6db3d8-73ab-4478-bb4e-2d172eb13913"
/>

**After**

<img width="300" alt="Screenshot 2024-12-13 at 09 33 33"
src="https://github.com/user-attachments/assets/b7dc71af-dbab-4e55-a79e-a1ee2580443a"
/>