Fix mermaid chart size (#13863)
Fix mermaid chart size (#13863)

* Fix mermaid chart size

Seems like one of the recent updates to the module unexpectedly shrunk
these charts, bring them back up to full width.

* don't stretch to full width

Co-authored-by: techknowlogick <274271a2414b6bd0d2eb0401dd4ff6e85d7016a7@gitea.io>
vdbt/gitea,vdbt/gitea,cez81/gitea,cez81/gitea,cez81/gitea,go-gitea/gitea,go-gitea/gitea,go-gitea/gitea