doc: Update readme.md

Author: qcoumes

README.md

@@ -133,7 +133,7 @@ POST http://localhost:8000/oauth2/token/
 
 > Note: `refresh_token` may be absent depending on the provider configuration.
 
-The response payload is produced by `TOKEN_PAYLOAD_HANDLER`, which issues JWTs via `djangorestframework-simplejwt` and returns the provider’s tokens.  
+The response payload is generated by `TOKEN_PAYLOAD_HANDLER`, which issues JWTs via `djangorestframework-simplejwt` and returns the provider’s tokens.  
 The `api` object contains tokens for authenticating against **your API**; the `provider` object contains tokens for the **provider**.
 
 Calling `/oauth2/token/` will also ensure a user exists in your database. This is handled by `TOKEN_USERINFO_HANDLER` (defaults to `simple_oauth2.utils.get_user`). It first tries to match a user via the `sub` claim from the ID Token; otherwise, it uses claims/UserInfo to retrieve or create a user.