[CI:DOCS] Fix broken CI readme links

Signed-off-by: Chris Evich <cevich@redhat.com>

CONTRIBUTING.md

@@ -361,9 +361,6 @@ All pull requests and branch-merges automatically run:
 * Integration Testing
 * Special testing (like running inside a container, or as a regular user)
 
-For a more in-depth reference of the CI system, please [refer to it's dedicated
-documentation.](contrib/cirrus/README.md)
-
 There is always additional complexity added by automation, and so it sometimes
 can fail for any number of reasons.  This includes post-merge testing on all
 branches, which you may occasionally see [red bars on the status graph

README.md

@@ -10,7 +10,7 @@ Podman is based on libpod, a library for container lifecycle management that is
   * Latest Remote client for MacOs
   * Latest Static Remote client for Linux
 
-* [Continuous Integration:](contrib/cirrus/README.md) [![Build Status](https://api.cirrus-ci.com/github/containers/podman.svg)](https://cirrus-ci.com/github/containers/podman/master)
+* Continuous Integration: [![Build Status](https://api.cirrus-ci.com/github/containers/podman.svg)](https://cirrus-ci.com/github/containers/podman/master)
 * [GoDoc: ![GoDoc](https://godoc.org/github.com/containers/podman/libpod?status.svg)](https://godoc.org/github.com/containers/podman/libpod)
 
 ## Overview and scope

docs/Readme.md

@@ -50,6 +50,5 @@ the following:
 If reloading the page, or clearing your local cache does not fix the problem, it is
 likely caused by broken metadata needed to protect clients from cross-site-scripting
 style attacks.  Please [notify a maintainer](https://github.com/containers/podman#communications)
-so they may investigate how/why the swagger.yaml file's CORS-metadata is incorrect.  See
-[the Cirrus-CI tasks documentation](../contrib/cirrus/README.md#docs-task) for
-details regarding this situation.
+so they may investigate how/why the `swagger.yaml` file's CORS-metadata is
+incorrect, or the file isn't accessable for some other reason.