Updated overview

Author: jaaufauvre

README.md

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 [![](https://github.com/Mastercard/mastercard-api-client-tutorial/workflows/broken%20links%3F/badge.svg)](https://github.com/Mastercard/mastercard-api-client-tutorial/actions?query=workflow%3A%22broken+links%3F%22)
 
-[Generating and Configuring a Mastercard API Client](https://developer.mastercard.com/platform/documentation/security-and-authentication/generating-and-configuring-a-mastercard-api-client/) explains how to generate and configure a simple API client for one of the APIs offered on the [Mastercard Developer portal](https://developer.mastercard.com/apis). 
+[Generating and Configuring a Mastercard API Client](https://developer.mastercard.com/platform/documentation/security-and-authentication/generating-and-configuring-a-mastercard-api-client/) explains how to generate and configure simple API clients for consuming APIs offered on the [Mastercard Developer portal](https://developer.mastercard.com/apis). 
 
 Languages used in this tutorial: Java, Python, NodeJS, Ruby, PHP and C#.