refactor: Append utm_source parameter to documentation URL

app/Console/Commands/ServicesGenerate.php

@@ -63,6 +63,7 @@ private function process_file($file)
         $documentation = collect(preg_grep('/^# documentation:/', explode("\n", $content)))->values();
         if ($documentation->count() > 0) {
             $documentation = str($documentation[0])->after('# documentation:')->trim()->value();
+            $documentation = str($documentation)->append('?utm_source=coolify.io');
         } else {
             $documentation = 'https://coolify.io/docs';
         }