Update EmbeddedCW to EmbeddedComplex in SECT class

Author: yemeen

src/ect/sect.py

@@ -1,5 +1,5 @@
 from ect import ECT
-from .embed_complex import EmbeddedGraph, EmbeddedCW
+from .embed_complex import EmbeddedComplex
 from .directions import Directions
 from .results import ECTResult
 from typing import Optional, Union
@@ -37,7 +37,7 @@ def __init__(
 
     def calculate(
         self,
-        graph: Union[EmbeddedGraph, EmbeddedCW],
+        graph: EmbeddedComplex,
         theta: Optional[float] = None,
         override_bound_radius: Optional[float] = None,
     ) -> ECTResult: