Fix a mistake in the cache warmup command

Signed-off-by: William Desportes <williamdes@wdes.fr>

libraries/classes/Command/CacheWarmupCommand.php

@@ -76,7 +76,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             return $twigCode;
         }
 
-        $routingCode = $this->warmUpTwigCache($output);
+        $routingCode = $this->warmUpRoutingCache($output);
         if ($routingCode !== 0) {
             $output->writeln('Routing cache generation had an error.');