docs: update formatting

[zkoppert]

This pull request makes a minor update to the policies/releasing.md file by removing an unnecessary blank line in the section about preparing code for release.

This will fix the linting failure on the main branch.

[Copilot]

Pull Request Overview

This PR aims to update the formatting in the documentation by removing an unnecessary blank line in the "Prepare the code for release" section of the policies/releasing.md file.

• Removed an excess blank line to tighten up the formatting.