DOC: Fix typo on FArrayDevice type description

examples/mtr-kokkos-simple.cpp

@@ -133,7 +133,7 @@ int main(int argc, char *argv[]) {
         matrix3D = FMatrixDevice <real_t> (10,10,10); // allocate dimensions and sizes 
 
         // Array example following the Fortran index convention,
-        // indicies go from 0 to less than N, last index varies the fastest
+        // indicies go from 0 to less than N, first index varies the fastest
         FArrayDevice <int> arr3D(10,10,10);