[doc] chore: heroes unified & slots-compliant

[vuejs-jp-bot]

本家のドキュメントに更新がありました 📄
Original: nuxt@b57e570
updatedFiles:
content/en/modules/index.md
content/en/partners/index.md
content/en/showcases/index.md
content/en/sponsors/index.md
content/en/support/index.md
content/en/teams/index.md
content/en/v3/index.md