修正MdiAreaWindowExample的cmake在linux系统下文件名大小写导致无法识别的问题

src/example/MdiAreaWindowExample/CMakeLists.txt

@@ -8,8 +8,8 @@ find_package(QT NAMES Qt6 Qt5 COMPONENTS Core REQUIRED)
 find_package(Qt${QT_VERSION_MAJOR} 5.8 COMPONENTS Core Gui Widgets REQUIRED)
 
 add_executable(${SARIBBON_EXPAMPLE_NAME} WIN32
-    MainWindow.h
-    MainWindow.cpp
+    mainWindow.h
+    mainWindow.cpp
     MainWindow.ui
     main.cpp
     icon.qrc