[pre-commit.ci] auto fixes from pre-commit.com hooks

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src/qibo/quantum_info/random_ensembles.py

@@ -424,7 +424,7 @@ def random_statevector(dims: int, seed=None, backend=None):
     state = local_state.standard_normal(dims).astype(complex)
     state += 1.0j * local_state.standard_normal(dims)
     state /= np.linalg.norm(state)
-    state =  backend.cast(state, dtype=state.dtype)
+    state = backend.cast(state, dtype=state.dtype)
 
     return state