updated main window title

gui/UI/MainWindow.ui

    </rect>
   </property>
   <property name="windowTitle">
-   <string>LibNFC_cppTools</string>
+   <string>LibNfc_cppTools</string>
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QVBoxLayout" name="verticalLayout">