Add missing audit .NET to release notes
## 2.13.0 (February 24, 2022)
- New 'jf docker push' & 'jf docker push' commands
+- New support for auditing .NET projects (nuget/dotnet)
- 'jf docker scan' - New progress indicator
- Performance improvement for collecting build-info dependencies
- Update the intro message of the 'jf project init' command to include docker
