Update docs for registry v2.8.0 release

Author: milosgajdos

registry/content.md

@@ -1,6 +1,8 @@
 # Docker Registry
 
-This image contains an implementation of the Docker Registry HTTP API V2 for use with Docker 1.6+. See [github.com/docker/distribution](https://github.com/docker/distribution) for more details about what it is.
+%%LOGO%%
+
+This image contains an implementation of the Docker Registry HTTP API V2 for use with Docker 1.6+. See [github.com/distribution/distribution](https://github.com/distribution/distribution) for more details about what it is.
 
 ## Run a local registry: Quick Version
 

registry/get-help.md

@@ -1,3 +1 @@
-[the Docker Community Forums](https://forums.docker.com/), [the Docker Community Slack](https://dockr.ly/slack), or [Stack Overflow](https://stackoverflow.com/search?tab=newest&q=docker)
-
--	**Need a free, secure hosted registry?** Try [Docker Hub](https://www.docker.com/pricing).
+[CNCF community slack](https://slack.cncf.io/), or [Stack Overflow](https://stackoverflow.com/questions/tagged/docker+registry)

registry/logo.png

@@ -0,0 +1 @@
+[CNCF maintainers](%%GITHUB-REPO%%)