CLI Download button visually broken

#### Summary

After merging https://github.com/TheThingsIndustries/lorawan-stack-docs/pull/1446 the button got visually broken. 

[docs link](https://www.thethingsindustries.com/docs/concepts/features/cli/installing-cli/#installing-using-pre-built-binaries)

<img width="441" alt="Image" src="https://github.com/user-attachments/assets/40ae18a1-3887-426a-9a39-af1b7ff4b857" />