Part of the unification of the Apify front-end changes - unifying the buttons across websites (web, blog, docs,...) - [x] Update the button radius <img width="620" height="317" alt="Image" src="https://github.com/user-attachments/assets/89d2fd53-8b8a-4fce-9df8-f890d4d0e7ad" /> Figma design are [here](https://www.figma.com/design/r6aPCnTKl1Gy3rPytKgndK/Documentation?node-id=3570-8600&m=dev)
