Update msc3861_delegated.py spelling correction (#18697)

Author: escix

synapse/api/auth/msc3861_delegated.py

@@ -480,7 +480,7 @@ async def get_user_by_access_token(
             # XXX: This is a temporary solution so that the admin API can be called by
             # the OIDC provider. This will be removed once we have OIDC client
             # credentials grant support in matrix-authentication-service.
-            logger.info("Admin toked used")
+            logger.info("Admin token used")
             # XXX: that user doesn't exist and won't be provisioned.
             # This is mostly fine for admin calls, but we should also think about doing
             # requesters without a user_id.