Clarify when "string" should be used (and be escaped), and when "template.HTML" should be used (no need to escape) And help PRs like #29059 , to render the error messages correctly.
Before: ![image](https://user-images.githubusercontent.com/18380374/234779250-8bbd325c-190e-4a30-ac3e-766498d17df5.png) After: ![image](https://user-images.githubusercontent.com/18380374/234779094-e232ecba-d9f4-4d62-a702-6d5e4a522782.png) ![image](https://user-images.githubusercontent.com/18380374/234779120-0293af17-a566-4b69-b454-af4e95844e3b.png) --------- Co-authored-by: silverwind <me@silverwind.io> Co-authored-by: Giteabot <teabot@gitea.io> Co-authored-by: wxiaoguang <wxiaoguang@gmail.com> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>