Update changelog for the v7.5.6 release by daxian-dbw · Pull Request #27320 · PowerShell/PowerShell

Using HTML inside Markdown section headings can make the changelog harder to read in plain-text contexts (e.g., release note tooling, terminal viewers) and can be inconsistently rendered by Markdown engines. Consider replacing the HTML paragraph with a Markdown line inside the <summary> (e.g., plain text like Update to .NET SDK 9.0.313) to improve portability while keeping the <details> structure.