display the toolbar horizontally in landscape mode

Former-commit-id: b89022b88baeb2d4c21e8b873eb18ce04420f55b

extension/ui/pages/editor.css

@@ -66,7 +66,7 @@ img[type=button].remove-highlight-disabled:hover {
     }
 }
 
-@media (orientation: landscape) {
+@media (orientation: portrait) {
     body {
         flex-direction: row;
     }