Fix argument naming in InstallPackageCommand for clarity

Author: crazywhalecc

src/StaticPHP/Command/InstallPackageCommand.php

@@ -8,19 +8,19 @@
 use StaticPHP\Package\PackageInstaller;
 use Symfony\Component\Console\Attribute\AsCommand;
 
-#[AsCommand('install-pkg', 'Install additional packages', ['i', 'install-package'])]
+#[AsCommand('install-pkg', 'Install additional package', ['i', 'install-package'])]
 class InstallPackageCommand extends BaseCommand
 {
     public function configure()
     {
-        $this->addArgument('packages', null, 'The package to install (name or path)');
+        $this->addArgument('package', null, 'The package to install (name or path)');
     }
 
     public function handle(): int
     {
         ApplicationContext::set('elephant', true);
         $installer = new PackageInstaller([...$this->input->getOptions(), 'dl-prefer-binary' => true]);
-        $installer->addInstallPackage($this->input->getArgument('packages'));
+        $installer->addInstallPackage($this->input->getArgument('package'));
         $installer->run(true, true);
         return static::SUCCESS;
     }