Fix log partition function name (#96)

Co-authored-by: John Reid <[email protected]>

Author: JohnReid

torch_struct/alignment.py

@@ -45,7 +45,7 @@ def _check_potentials(self, edge, lengths=None):
         assert max(lengths) == N, "One length must be at least N"
         return edge, batch, N, M, lengths
 
-    def logparition(self, log_potentials, lengths=None, force_grad=False, cache=True):
+    def logpartition(self, log_potentials, lengths=None, force_grad=False, cache=True):
         return self._dp_scan(log_potentials, lengths, force_grad)
 
     def _dp_scan(self, log_potentials, lengths=None, force_grad=False):