login: replace tabs with spaces in example polkit rule

Author: YHNdnzj

src/login/10-systemd-logind-root-ignore-inhibitors.rules.example

@@ -13,8 +13,8 @@ polkit.addRule(function(action, subject) {
          action.id == "org.freedesktop.login1.halt-ignore-inhibit" ||
          action.id == "org.freedesktop.login1.suspend-ignore-inhibit" ||
          action.id == "org.freedesktop.login1.hibernate-ignore-inhibit") &&
-	subject.user == "root") {
+        subject.user == "root") {
 
-	return polkit.Result.YES;
+        return polkit.Result.YES;
     }
 });