Update aspnetcore/security/authentication/configure-jwt-bearer-authentication.md

Co-authored-by: Stephen Halter <[email protected]>

Author: damienbod

aspnetcore/security/authentication/configure-jwt-bearer-authentication.md

@@ -14,6 +14,7 @@ By [Damien Bowden](https://github.com/damienbod)
 
 JWT (JSON Web Token) Bearer Authentication is commonly utilized for APIs. While it operates similarly to cookie authentication, the identity provider issues a JWT or tokens upon a successful authentication. These tokens can then be sent to other servers to authenticate, unlike cookies which are only sent back to the issuing domain. A JWT is a self-contained token that encapsulates information for an API resource or a client. The client which requested the JWT can request data from an API resource using the Authorization header and a bearer token.
 
+For an introduction to JWT Bearer Authentication, see [JSON Web Tokens.](https://en.wikipedia.org/wiki/JSON_Web_Token)
 [View or download sample code](https://github.com/dotnet/AspNetCore.Docs/tree/main/aspnetcore/security/authentication/configure-jwt-bearer-authentication/sample/JwtBearer)
 
 This article covers the following areas: