Merge pull request #202 from creativecommons/archive-cleanup

update URL in README to new cc-archive location for `creativecommons-certificate` repository

Author: possumbilities

README.md

@@ -49,7 +49,7 @@ This project follows the [all-contributors](https://github.com/all-contributors/
 
 The following projects inherit from the `creativecommons-base` theme:
 
-- [Certificate](https://github.com/creativecommons/creativecommons-certificate/blob/b2967296b0324f33d1be4c041954513363191bcc/composer.json#L21)
+- [Certificate](https://github.com/cc-archive/creativecommons-certificate/blob/b2967296b0324f33d1be4c041954513363191bcc/composer.json#L21)
 - [wp-theme-creativecommons.org](https://github.com/creativecommons/wp-theme-creativecommons.org/blob/375cafbaccf03eded02f8f7f422e02e97833515a/composer.json#L20)
 
 Additional projects that may inherit from `creativecommons-base`: