marketing: add offer to help with outreach (#1480)

@garbas recently set up StreamYard and said we should get more
maintainers and contributors to use it

related: #1479

Co-authored-by: tomberek <tomberek@users.noreply.github.com>

src/content/teams/07_marketing.mdx

@@ -114,6 +114,21 @@ into phases in the user journey:
 - Number of contributors and forks
 - Number of opened issues and pull requests
 
+## Supporting contributors and community teams with outreach
+
+If you're working on improving the Nix ecosystem, the marketing team is there to help you reach your audience.
+
+- We encourage every team to produce a live stream or video recording once in a while.
+
+ Get in touch to access our [StreamYard](https://streamyard.com/) account for broadcasting to
+ - [YouTube](https://www.youtube.com/channel/UC3vIimi9q4AT8EgxYp_dWIw)
+ - [LinkedIn](https://www.linkedin.com/company/nixos-foundation/)
+ - [Twitter](https://twitter.com/nixos_org)
+ - Self-hosted Owncast on [live.nixos.org](https://live.nixos.org)
+
+- Send us your announcements to be included in the monthly newsletter
+- Send us your questions to be included in the yearly community survey
+
 ## 3-months plan (June through August 2023)
 
 The current team consists of 5 people with regular availability of ca. 2 hours