chore: fix the broken repo links (#6718)

* chore: fix the link of CONTRIBUTING.md

* chore: fix the broken repo links

README.md

@@ -1,6 +1,6 @@
 ![Decap CMS](/img/decap.svg)
 
-[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/decapcms/decap-cms/blob/master/LICENSE) [![Netlify Status](https://api.netlify.com/api/v1/badges/8b87160b-0a11-4f75-8050-1d21bc1cff8c/deploy-status)](https://app.netlify.com/sites/decap-www/deploys) [![npm version](https://img.shields.io/npm/v/netlify-cms.svg?style=flat)](https://www.npmjs.com/package/netlify-cms) [![Build Status](https://github.com/decapcms/decap-cms/workflows/Node%20CI/badge.svg)](https://github.com/decapcms/decap-cms/actions?query=branch%3Amaster+workflow%3A%22Node+CI%22) ![FOSSA Status](https://app.fossa.com/api/projects/custom%2B17679%2Fgit%40github.com%3Anetlify%2Fnetlify-cms.git.svg?type=shield) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://github.com/decapcms/decap-cms/blob/master/CONTRIBUTING.md)
+[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/decaporg/decap-cms/blob/master/LICENSE) [![Netlify Status](https://api.netlify.com/api/v1/badges/8b87160b-0a11-4f75-8050-1d21bc1cff8c/deploy-status)](https://app.netlify.com/sites/decap-www/deploys) [![npm version](https://img.shields.io/npm/v/netlify-cms.svg?style=flat)](https://www.npmjs.com/package/netlify-cms) [![Build Status](https://github.com/decaporg/decap-cms/workflows/Node%20CI/badge.svg)](https://github.com/decaporg/decap-cms/actions?query=branch%3Amaster+workflow%3A%22Node+CI%22) ![FOSSA Status](https://app.fossa.com/api/projects/custom%2B17679%2Fgit%40github.com%3Anetlify%2Fnetlify-cms.git.svg?type=shield) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://github.com/decaporg/decap-cms/blob/master/CONTRIBUTING.md)
 
 [decapcms.org](https://www.decapcms.org/) 
 
@@ -35,12 +35,12 @@ The Decap CMS can be used in two different ways.
 
 ## Contributing
 
-New contributors are always welcome! Check out [CONTRIBUTING.md](https://github.com/decapcms/decap-cms/blob/master/CONTRIBUTING.md) to get involved.
+New contributors are always welcome! Check out [CONTRIBUTING.md](https://github.com/decaporg/decap-cms/blob/master/CONTRIBUTING.md) to get involved.
 
 ## Change Log
 
 This project adheres to [Semantic Versioning](http://semver.org/).
-Every release is documented on the Github [Releases](https://github.com/decapcms/decap-cms/releases) page.
+Every release is documented on the Github [Releases](https://github.com/decaporg/decap-cms/releases) page.
 
 ## License