Update Copyrights

Author: jason-fox

README.md

@@ -7,7 +7,7 @@
 
 ## Understanding Verifiable Credentials
 
-[![FIWARE Security](https://nexus.lab.fiware.org/repository/raw/public/badges/chapters/security.svg)](https://github.com/FIWARE/catalogue/blob/master/security/README.md)
+[![FIWARE Security](https://fiware.github.io/catalogue/badges/chapters/security.svg)](https://github.com/FIWARE/catalogue/blob/master/security/README.md)
 [![License: MIT](https://img.shields.io/github/license/fiware/tutorials.Understanding-At-Context.svg)](https://opensource.org/licenses/MIT)
 [![Support badge](https://img.shields.io/badge/tag-fiware-orange.svg?logo=stackoverflow)](https://stackoverflow.com/questions/tagged/fiware)
 [![JSON LD](https://img.shields.io/badge/JSON--LD-1.1-f06f38.svg)](https://w3c.github.io/json-ld-syntax/) <br/>