change wording

src/NewCommand.php

@@ -38,7 +38,7 @@ class NewCommand extends Command
     protected function execute(InputInterface $input, OutputInterface $output)
     {
         if (! class_exists('ZipArchive')) {
-            throw new RuntimeException('The Zip extension is missing on your system. Please install it and try again.');
+            throw new RuntimeException('The Zip PHP extension is not installed. Please install it and try again.');
         }
 
         $this->verifyApplicationDoesntExist(