Add QEDIT as a company that's using OpenAPI Generator (#4392)

Author: amitizle

README.md

@@ -603,6 +603,7 @@ Here are some companies/projects (alphabetical order) using OpenAPI Generator in
 - [Ponicode](https://ponicode.dev/)
 - [Pricefx](https://www.pricefx.com/)
 - [Prometheus/Alertmanager](https://github.com/prometheus/alertmanager)
+- [QEDIT](https://qed-it.com)
 - [Qulix Systems](https://www.qulix.com)
 - [Raiffeisen Schweiz Genossenschaft](https://www.raiffeisen.ch)
 - [RedHat](https://www.redhat.com)