correct asset_host to external URL
Merge pull request #179 from alphagov/correct-asset_host

correct asset_host to external URL
Padma's recent style guide updates
Padma's recent style guide updates
Fix what’s new update

- make it valid YAML
- make link fragments point to correct content
Add missing full stop
Service manual updates #version-103

https://github.com/alphagov/government-service-design-manual/compare/version-102...version-103