message: Fix row filter dialog help title string
diff: @@ -1071,7 +1071,7 @@ bool CreateRowFilterDlg::render_dlg( TraceEvents &trace_events )
  {
  std::string tooltip;
  - tooltip += s_textclrs().bright_str( "Add a new row with filtered events\n\n" );
  + tooltip += s_textclrs().bright_str( "Row filter expression\n\n" );
  tooltip += "Examples:\n";
  tooltip += " $pid = 4615\n";
  