Update string.py

Author: miguelpgarcia

pandas/core/arrays/string_.py

@@ -188,9 +188,7 @@ def construct_from_string(cls, string) -> Self:
     # https://github.com/pandas-dev/pandas/issues/36126
     # error: Signature of "construct_array_type" incompatible with supertype
     # "ExtensionDtype"
-    def construct_array_type( 
-        self,
-    ) -> type_t[BaseStringArray]:
+    def construct_array_type(self) -> type_t[BaseStringArray]:
         """
         Return the array type associated with this dtype.