SWDEV-339113 - Update sampl codes with correct kernel coordinate (#2704)

Change-Id: Ibfc0fd285441cd3d79b312d2b739729a039a6f84

samples/0_Intro/module_api/vcpy_kernel.cpp

@@ -23,6 +23,6 @@ THE SOFTWARE.
 #include "hip/hip_runtime.h"
 
 extern "C" __global__ void hello_world(float* a, float* b) {
-    int tx = hipThreadIdx_x;
+    int tx = threadIdx.x;
     b[tx] = a[tx];
 }