Fix typo in periodicity check.

Author: greschd

z2pack/hm.py

@@ -64,7 +64,7 @@ def __init__(
         if check_periodic:
             k_values = itertools.product([0, 1], repeat=dim)
             k_first = next(k_values)
-            ham_first = self._hamilton()
+            ham_first = self._hamilton(k_first)
             for k in k_values:
                 if not np.allclose(ham_first, self._hamilton(k)):
                     raise ValueError(