Add code comments

Author: Jack251970

Flow.Launcher/SettingPages/ViewModels/SettingsPaneThemeViewModel.cs

@@ -479,6 +479,7 @@ public SettingsPaneThemeViewModel(Settings settings, Theme theme)
                     )
                 }
             };
+        // Set main view model to null because this results are for preview only
         var vm = new ResultsViewModel(Settings, null);
         vm.AddResults(results, "PREVIEW");
         PreviewResults = vm;

Flow.Launcher/ViewModel/ResultsViewModel.cs

@@ -211,7 +211,7 @@ private void UpdateResults(List<ResultViewModel> newResults, bool reselect = tru
             switch (Visibility)
             {
                 case Visibility.Collapsed when Results.Count > 0:
-                    if (_mainVM == null || // The results is for preview only in apprerance page
+                    if (_mainVM == null || // The results are for preview only in apprerance page
                         _mainVM.ResultsSelected(this)) // The results are selected
                     {
                         SelectedIndex = 0;