Merge branch 'docs-intro-to-ci-video' into 'master'

Update Intro to CI docs

See merge request gitlab-org/gitlab!30220

doc/ci/introduction/index.md

@@ -76,6 +76,9 @@ to apply all the continuous methods (Continuous Integration,
 Delivery, and Deployment) to your software with no third-party
 application or integration needed.
 
+<i class="fa fa-youtube-play youtube" aria-hidden="true"></i>
+For an overview, see [Introduction to GitLab CI](https://www.youtube.com/watch?v=l5705U8s_nQ&t=397) from a recent GitLab meetup.
+
 ### How GitLab CI/CD works
 
 To use GitLab CI/CD, all you need is an application codebase hosted in a
@@ -212,7 +215,7 @@ With GitLab CI/CD you can also:
 To see all CI/CD features, navigate back to the [CI/CD index](../README.md).
 
 <i class="fa fa-youtube-play youtube" aria-hidden="true"></i>
-Watch the video [GitLab CI Live Demo](https://www.youtube.com/watch?v=pBe4t1CD8Fc) with a deeper overview of GitLab CI/CD.
+Watch the video [GitLab CI Live Demo](https://youtu.be/l5705U8s_nQ?t=369) with a deeper overview of GitLab CI/CD.
 
 ### Setting up GitLab CI/CD for the first time