PR feedback on wording

Signed-off-by: Steve Lasker <[email protected]>

Author: SteveLasker

artifact-manifest.md

@@ -1,6 +1,6 @@
 # OCI Artifact Manifest
 
-The OCI artifact manifest generalizes the use cases of [OCI image manifest][oci-image-manifest-spec] by removing constraints defined on the image-manifest such as a required `config` object and required & ordinal `layers`. It then adds a `subjectManifest` property supporting reference types. The addition of a new manifest does not change, nor impact the `image.manifest`. It provides a means to define a wide range of artifacts, including a chain of related artifacts enabling SBoMs, on-demand loading, signatures and metadata that can be related to an `image.manifest` or `image.index`. By defining a new manifest, registries and clients opt-into new capabilities, without breaking existing registry and client behavior or setting expectations for scenarios to function when the client and/or registry doesn't yet implement the new capabilities.
+The OCI artifact manifest generalizes the use cases of [OCI image manifest][oci-image-manifest-spec] by removing constraints defined on the image-manifest such as a required `config` object and required ordinal `layers` collection. The `subjectManifest` property provides a means to define a wide range of artifacts, including a chain of related artifacts enabling SBoMs, on-demand loading, signatures and metadata that can be related to an `image.manifest` or `image.index`.  The addition of a new manifest does not change, nor impact the `image.manifest`. By defining a new manifest, registries and clients opt-into new capabilities, without breaking existing registry and client behavior or setting expectations for scenarios to function when the client and/or registry doesn't yet implement the new capabilities.
 
 # Phased Implementations Through Experimental Releases