Fix a typo in the about command

Author: peterfox

src/FeatureFlagsServiceProvider.php

@@ -149,7 +149,7 @@ protected function aboutCommandInfo(): void
     {
         if (class_exists(AboutCommand::class)) {
             AboutCommand::add('Feature Flags', [
-                'Pipeline' => fn () => implode(', Hello', config('features.pipeline')),
+                'Pipeline' => fn () => implode(', ', config('features.pipeline')),
             ]);
         }
     }