readme: fix URLs pointing to the wrong docs

README.md

@@ -11,8 +11,10 @@ Quay is project to build, store, and distribute container images.
 
 High-level features include:
 
-- Docker Registry Protocol [v1], [v2.1]
-- [AppC Image Discovery]
+- Docker Registry Protocol [v1], [v2]
+- Docker Manifest Schema [v2.1]
+- [AppC Image Discovery] via on-demand transcoding
+- Image Squashing via on-demand transcoding
 - Authentication provided by [LDAP], [Keystone], [Dex], [Google], [GitHub]
 - ACLs, team management, and auditability logs
 - Geo-replicated storage provided by local filesystems, [S3], [GCS], [Swift], [Ceph]
@@ -21,8 +23,9 @@ High-level features include:
 - [Swagger]-compliant HTTP API
 
 [releases]: https://github.com/coreos-inc/quay/releases
-[v1]: https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-1.md
-[v2.1]: https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md
+[v1]: https://docs.docker.com/v1.6/reference/api/registry_api/
+[v2]: https://docs.docker.com/v1.6/registry/
+[v2.1]: https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-1.md
 [AppC Image Discovery]: https://github.com/appc/spec/blob/master/spec/discovery.md
 [LDAP]: https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol
 [Keystone]: http://docs.openstack.org/developer/keystone
@@ -190,6 +193,6 @@ TODO
 - **Docker Hub**: Docker's hosted _Registry_
 - **Docker Trusted Registry**: Docker's enterprise-grade _Registry_ product
 - **Notary**: an open source implementation of the TUF protocol used in _Docker Content Trust_
-- **Docker Content Trust**: the integration between _Notary_ and _Docker Trusted Registry)
+- **Docker Content Trust**: the integration between _Notary_ and _Docker Trusted Registry_
 - **Docker Engine**: a program used to interact with all aspects of the Docker platform
 - **Swarm**: a program implementing _Container Orchestration_ for the Docker platform