Fixed indentation [skip ci]

Author: ankane

tests/test_sqlmodel.py

@@ -203,7 +203,7 @@ def test_vector_avg(self):
  session.add(Item(embedding=[1, 2, 3]))
  session.add(Item(embedding=[4, 5, 6]))
  avg = session.exec(select(func.avg(Item.embedding))).first()
-  # does not type cast
+ # does not type cast
  assert avg == '[2.5,3.5,4.5]'
 
  def test_vector_sum(self):