Update Badges

Author: jason-fox

README.ja.md

@@ -1,7 +1,7 @@
 [![FIWARE Banner](https://fiware.github.io/tutorials.Relationships-Linked-Data/img/fiware.png)](https://www.fiware.org/developers)
 [![NGSI LD](https://img.shields.io/badge/NGSI-LD-d6604d.svg)](https://cim.etsi.org/NGSI-LD/official/front-page.html)
 
-[![FIWARE Core Context Management](https://nexus.lab.fiware.org/repository/raw/public/badges/chapters/core.svg)](https://github.com/FIWARE/catalogue/blob/master/core/README.md)
+[![FIWARE Core Context Management](https://fiware.github.io/catalogue/badges/chapters/core.svg)](https://github.com/FIWARE/catalogue/blob/master/core/README.md)
 [![License: MIT](https://img.shields.io/github/license/fiware/tutorials.Relationships-Linked-Data.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)
 <br/> [![Documentation](https://img.shields.io/readthedocs/fiware-tutorials.svg)](https://fiware-tutorials.rtfd.io)

README.md

@@ -7,7 +7,7 @@
 
 ## Entity Relationships (NGSI-LD)
 
-[![FIWARE Core Context Management](https://nexus.lab.fiware.org/repository/raw/public/badges/chapters/core.svg)](https://github.com/FIWARE/catalogue/blob/master/core/README.md)
+[![FIWARE Core Context Management](https://fiware.github.io/catalogue/badges/chapters/core.svg)](https://github.com/FIWARE/catalogue/blob/master/core/README.md)
 [![License: MIT](https://img.shields.io/github/license/fiware/tutorials.Relationships-Linked-Data.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)
 <br/> [![Documentation](https://img.shields.io/readthedocs/fiware-tutorials.svg)](https://fiware-tutorials.rtfd.io)