Removing blank ECCTL release notes and contributing docs

docs/redirects.yml

@@ -0,0 +1,3 @@
+redirects:
+  'reference/ecctl-release-notes.md': '!release-notes/index.md'
+  'reference/ecctl-contributing.md': '!reference/index.md'

docs/reference/index.md

@@ -2,6 +2,7 @@
 mapped_pages:
   - https://www.elastic.co/guide/en/ecctl/current/index.html
   - https://www.elastic.co/guide/en/ecctl/current/ecctl-overview.html
+  - https://www.elastic.co/guide/en/ecctl/current/ecctl-contributing.html
 applies_to:
   deployment:
     ess: all
@@ -17,3 +18,9 @@ Benefits of ecctl:
 * Easier to use than the Cloud UI or using the RESTful API directly
 * Helps you automate the deployment lifecycle
 * Provides a foundation for integration with other tools
+
+Stay up to date with the latest changes by reviewing the [ECCTL release notes](/release-notes/index.md).
+
+## Contributing [ecctl-contributing]
+
+If you are interested in becoming a part of this project, take a look at [Contributing to ecctl](https://github.com/elastic/ecctl/blob/master/CONTRIBUTING.md).

docs/reference/toc.yml

@@ -154,5 +154,3 @@ toc:
       - file: ecctl_user_show.md
       - file: ecctl_user_update.md
       - file: ecctl_version.md
-  - file: ecctl-contributing.md
-  - file: ecctl-release-notes.md