rename class for a more accurate name

Author: JoMessina

src/ExpressionLanguage/Download.php renamed to src/ExpressionLanguage/Open.php

@@ -6,7 +6,7 @@
 
 use Symfony\Component\ExpressionLanguage\ExpressionFunction;
 
-final class Download extends ExpressionFunction
+final class Open extends ExpressionFunction
 {
     public function __construct(string $name)
     {

src/ExpressionLanguage/Provider.php

@@ -17,7 +17,7 @@ public function getFunctions(): array
             new Base64Decode('base64Decode'),
             new TemporaryFile('temporaryFile'),
             new InSql('inSql'),
-            new Download('downloadFile'),
+            new Open('downloadFile'),
         ];
     }
 }