Fix CubeReflection's orientation

examples/CubeReflection.cpp

diff --git a/examples/CubeReflection.cpp b/examples/CubeReflection.cpp
index 3423a9a..d925a45 100644
--- a/examples/CubeReflection.cpp
+++ b/examples/CubeReflection.cpp
@@ -269,7 +269,7 @@
     cameraData.view = glm::lookAt(
         glm::vec3(8.f * std::sin(glm::radians(s.b * 360.f)), 2.f, 8.f * std::cos(glm::radians(s.b * 360.f))),
         glm::vec3(0.0f, 0.0f, 0.0f),
-        glm::vec3(0.0f, 1.0f, 0.0f)
+        glm::vec3(0.0f, -1.0f, 0.0f)
     );
 
     cameraBuffer.TransitionUsage(nxt::BufferUsageBit::TransferDst);