Fix jwtDecoder Documentation Usage

Closes gh-10505

docs/modules/ROOT/pages/servlet/oauth2/resource-server/multitenancy.adoc

@@ -416,9 +416,9 @@ Now that we have a tenant-aware processor and a tenant-aware validator, we can p
 ----
 @Bean
 JwtDecoder jwtDecoder(JWTProcessor jwtProcessor, OAuth2TokenValidator<Jwt> jwtValidator) {
-	NimbusJwtDecoder decoder = new NimbusJwtDecoder(processor);
+	NimbusJwtDecoder decoder = new NimbusJwtDecoder(jwtProcessor);
 	OAuth2TokenValidator<Jwt> validator = new DelegatingOAuth2TokenValidator<>
-			(JwtValidators.createDefault(), this.jwtValidator);
+			(JwtValidators.createDefault(), jwtValidator);
 	decoder.setJwtValidator(validator);
 	return decoder;
 }