update ssh_validate for new testValidSSHKey

Author: simonLeary42

webroot/js/ajax/ssh_validate.php

@@ -3,4 +3,5 @@
 require_once __DIR__ . "/../../../vendor/autoload.php";
 require_once __DIR__ . "/../../../resources/lib/utils.php";
 
-echo testValidSSHKey($_POST["key"]) ? "true" : "false";
+header('Content-Type: application/json; charset=utf-8');
+echo jsonEncode(testValidSSHKey($_POST["key"]));