Merge pull request #5146 from Basliel25/patch-1

Add third OCI specification

src/data/roadmaps/docker/content/100-introduction/103-docker-and-oci.md

@@ -8,12 +8,15 @@ The [Open Container Initiative (OCI)](https://opencontainers.org/) is a Linux Fo
 
 ### OCI Specifications
 
-OCI has two main specifications:
+OCI has three main specifications:
 
 - **Runtime Specification (runtime-spec):** It defines the specification for executing a container via an isolation technology, like a container engine. The container runtime built by Docker, called 'containerd', has guided the development of the OCI runtime-spec.
 
 - **Image Specification (image-spec):** It defines the container image format, which describes the contents of a container and can be run by a compliant runtime. Docker's initial image format has led to the creation of the OCI image-spec.
 
+- **Distribution Specification (distribution-spec):** It defines defines an API protocol to facilitate and standardize the distribution of content. Docker's existing registry API served as a starting point and heavily influenced the design of the OCI Distro Spec. 
+
+
 ### Compatibility between Docker and OCI
 
 Docker remains committed to supporting the OCI specifications and, since its involvement in OCI, has continuously updated its software to be compliant with OCI standards. Docker's containerd runtime and image format are fully compatible with OCI specifications, enabling Docker containers to be run by other OCI-compliant container runtimes and vice versa.