chore: update REAME.md

Author: tugascript

README.md

@@ -1,9 +1,9 @@
-# Nest OAuth: Adding External Providers
+# Nest OAuth: Adding Mobile Apps Support
 
 ## Intro
 
 This is the source code for the
-tutorial [Nest Authentication with OAuth2.0](https://dev.to/tugascript/nestjs-authentication-with-oauth20-adding-external-providers-2kj).
+tutorial [Nest Authentication with OAuth2.0](https://dev.to/tugascript/nestjs-authentication-with-oauth20-adding-mobile-apps-support-13nl).
 This is the 6<sup>th</sup> and extra part on a 5 part series, where we will build a production level NestJS OAuth2
 service.
 

src/oauth2/oauth2.controller.ts

@@ -218,7 +218,7 @@ export class Oauth2Controller {
     status: HttpStatus.OK,
   })
   @ApiUnauthorizedResponse({
-    description: 'Code or state is invalid',
+    description: 'Code or redirectUri is invalid',
   })
   public async token(
     @CurrentUser() userId: number,