Use normal slash in #include

modules/videoio/src/cap_winrt_bridge.hpp

@@ -33,7 +33,7 @@
 #include <ppltasks.h>
 #include <concrt.h>
 #include <agile.h>
-#include <opencv2\core.hpp>
+#include <opencv2/core.hpp>
 
 #include <mutex>
 #include <memory>
@@ -114,4 +114,4 @@ private:
     cv::Mat backInputMat;
 
     int deviceIndex, width, height;
-};
+};