Merge pull request #3991 from shaedrich/cd

Add disambiguation page for abbreviation "CD"

Author: ahpook

topics/cd/index.md

@@ -0,0 +1,9 @@
+---
+display_name: CD (Disambiguation)
+short_description: 'CD can either mean "continuous deployment" or "Continuous delivery".'
+topic: cd
+related: continuous-deployment, continuous-delivery, continuous-integration, cicd, devops
+---
+**CD**, within the context of [CI/CD](https://github.com/topics/cicd), can mean multiple things:
+* [Continuous deployment](https://github.com/topics/continuous-deployment)
+* [Continuous delivery](https://github.com/topics/continuous-delivery)