* Format md,mdx files with prettier on lint-staged * Manually run prettier on docs/sources
* add license change to changelog, release notes, and whats new * wording update to match other headers
* ReleaseNotes: Updated changelog and release notes for 8.0.0-beta1 * Apply suggestions from code review * Tweaks * Update relase notes index * Add PR Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com> Co-authored-by: Andrej Ocenas <mr.ocenas@gmail.com>