Changed to a more conventional name

Author: Randall Flagg

src/LogExpert/Controls/LogWindow/LogWindow.designer.cs

@@ -646,7 +646,7 @@ private void OnDataGridViewResize(object sender, EventArgs e)
             }
         }
 
-        private void OnDataGridViewSelectionChanged(object sender, EventArgs e)
+        private void DataGridView_SelectionChanged(object sender, EventArgs e)
         {
             UpdateSelectionDisplay();
         }