fixed typo

Author: RichardDominik

src/Console/Commands/AdminUIInstall.php

@@ -74,7 +74,7 @@ private function frontendAdjustments(Filesystem $files) {
         $packageJsonContent['devDependencies']['vue-loader'] = '15.9.5';
         $packageJsonContent['devDependencies']['sass-loader'] = '^8.0.2';
         $packageJsonContent['devDependencies']['resolve-url-loader'] = '^3.1.0';
-        $packageJsonContent['devDependencies']['sass'] = '^1.32.6”';
+        $packageJsonContent['devDependencies']['sass'] = '^1.32.6';
 
         $files->put($packageJsonFile, json_encode($packageJsonContent, JSON_PRETTY_PRINT));
         $this->info('package.json changed');