adding ptv group to https://openapi-generator.tech/users (#13829)

Author: Reinhard-PTV

website/src/dynamic/users.yml

@@ -408,6 +408,11 @@
   image: "img/companies/prometheus.png"
   infoLink: "https://github.com/prometheus/alertmanager"
   pinned: false
+-
+  caption: "PTV Group"
+  image: "img/companies/ptvgroup.png"
+  infoLink: "https://www.myptv.com/"
+  pinned: false  
 -
   caption: Puppet
   image: "img/companies/puppet.svg"