Improve reference to Statevector.data

qiskit_machine_learning/kernels/fidelity_statevector_kernel.py

@@ -40,7 +40,8 @@ class FidelityStatevectorKernel(BaseKernel):
 
         K(x,y) = |\langle \phi(x) | \phi(y) \rangle|^2.
 
-    In this implementation, :math:`|\phi(y)\rangle` is given by a ``Statevector.data`` array. These
+    In this implementation, :math:`|\phi(y)\rangle` is given by a
+    :attr:`qiskit.quantum_info.Statevector.data` array. These
     arrays are stored in a statevector cache to avoid repeated evaluation of the quantum circuit.
     This cache can be cleared using :meth:`clear_cache`. By default the cache is cleared when
     :meth:`evaluate` is called, unless ``auto_clear_cache`` is ``False``.