Update README.md (#24297)

* Update README.md

Added AM GmbH to list of companies using OpenAPI Generator in production.

* Update README.md

Sorted companies beginning with letter A.

Author: hellopabu

README.md

@@ -661,12 +661,13 @@ Here are some companies/projects (alphabetical order) using OpenAPI Generator in
 - [Airthings](https://www.airthings.com/)
 - [Aleri Solutions Gmbh](https://www.aleri.de/)
 - [Allianz](https://www.allianz.com)
+- [AM GmbH](https://www.am-gmbh.de)
+- [Amazon Web Services (AWS)](https://aws.amazon.com/)
 - [Angular.Schule](https://angular.schule/)
 - [Aqovia](https://aqovia.com/)
-- [Australia and New Zealand Banking Group (ANZ)](http://www.anz.com/)
 - [Arduino](https://www.arduino.cc/)
 - [ASKUL](https://www.askul.co.jp)
-- [Amazon Web Services (AWS)](https://aws.amazon.com/)
+- [Australia and New Zealand Banking Group (ANZ)](http://www.anz.com/)
 - [b<>com](https://b-com.com/en)
 - [百度营销](https://e.baidu.com)
 - [Bandwidth](https://dev.bandwidth.com)