Update OAuth2 to OIDC in security overview

Author: aloccid-iata

Documentation_website/docs/API-Security/security/security-overview.md

@@ -15,8 +15,8 @@ and in compliance with corporate and local data security requirements.
 
 IT and business experts from the industry from ONE Record Task Force have explored and discussed the different connectivity configurations within the ONE Record network and two models – possibly complementary – were retained. 
 
-ONE Record Security specifications are built around two concepts: mutual TLS (short for Transport Layer Security) and OAuth2 (an authorization protocol). 
-Mutual TLS secures all the Node-to-Node channels whereas OAuth2 adds an extra security layer for identification and authentication.
+ONE Record Security specifications are built around two concepts: mutual TLS (short for Transport Layer Security) and OIDC (an authorization protocol). 
+Mutual TLS secures all the Node-to-Node channels whereas OIDC adds an extra security layer for identification and authentication.
 
 IATA has conceptualized a first practical implementation, which is promoted as the official security model for ONE Record. This implementation is split in two modules:
 •	TLS authentication support, including the definition of certificate profiles and practical use of digital certificates for client and server certificates;