IVGCVSW-1946: Remove armnn/src from the include paths

Change-Id: I663a0a0fccb43ee960ec070121a59df9db0bb04e
diff --git a/src/backends/reference/workloads/Merger.hpp b/src/backends/reference/workloads/Merger.hpp
index 61c1311..76d807c 100644
--- a/src/backends/reference/workloads/Merger.hpp
+++ b/src/backends/reference/workloads/Merger.hpp
@@ -7,7 +7,7 @@
 
 #include "RefWorkloadUtils.hpp"
 
-#include <backends/WorkloadData.hpp>
+#include <backendsCommon/WorkloadData.hpp>
 #include <armnn/Tensor.hpp>
 
 namespace armnn