Update Stack Overflow Badge

Author: jason-fox

README.ja.md

@@ -3,7 +3,7 @@
 [![FIWARE Media Streams](https://nexus.lab.fiware.org/repository/raw/public/badges/chapters/media-streams.svg)](https://github.com/FIWARE/catalogue/blob/master/processing/README.md)
 [![License: MIT](https://img.shields.io/github/license/fiware/tutorials.Media-Streams.svg)](https://opensource.org/licenses/MIT)
 [![Kurento 6.7.1](https://img.shields.io/badge/Kurento-6.7.1-4f3495.svg)](http://doc-kurento.readthedocs.io/)
-[![Support badge](https://nexus.lab.fiware.org/repository/raw/public/badges/stackoverflow/fiware.svg)](https://stackoverflow.com/questions/tagged/fiware)
+[![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)
 
 <!-- prettier-ignore -->

README.md

@@ -3,7 +3,7 @@
 [![FIWARE Media Streams](https://nexus.lab.fiware.org/repository/raw/public/badges/chapters/media-streams.svg)](https://github.com/FIWARE/catalogue/blob/master/processing/README.md)
 [![License: MIT](https://img.shields.io/github/license/fiware/tutorials.Media-Streams.svg)](https://opensource.org/licenses/MIT)
 [![Kurento 6.7.1](https://img.shields.io/badge/Kurento-6.7.1-4f3495.svg)](http://doc-kurento.readthedocs.io/)
-[![Support badge](https://nexus.lab.fiware.org/repository/raw/public/badges/stackoverflow/fiware.svg)](https://stackoverflow.com/questions/tagged/fiware)
+[![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)
 
 This is an Introductory Tutorial to [FIWARE Kurento](http://kurento.readthedocs.io/) - a media server generic enabler