Fix typo

Author: AlexAndorra

tests/statespace/models/structural/components/test_autoregressive.py

@@ -166,7 +166,9 @@ def test_autoregressive_shared_and_not_shared():
 
     # make sure param_info is correct
     # shound't have endog state when share_states is True
-    assert not any(dim.startwith("endog_") for dim in shared.param_info["params_shared_ar"]["dims"])
+    assert not any(
+        dim.startswith("endog_") for dim in shared.param_info["params_shared_ar"]["dims"]
+    )
     assert shared.param_info["sigma_shared_ar"]["dims"] is None
 
     individual = st.AutoregressiveComponent(