chore: set_(window_)option: Fix docstring

Author: tony

src/libtmux/session.py

@@ -267,7 +267,7 @@ def show_options(
     def show_option(
         self, option: str, _global: bool = False
     ) -> t.Optional[t.Union[str, int, bool]]:
-        """Return a list of options for the window.
+        """Return option value for the target session.
 
         Parameters
         ----------

src/libtmux/window.py

@@ -407,7 +407,7 @@ def show_window_option(
         self, option: str, g: bool = False
     ) -> t.Optional[t.Union[str, int]]:
         """
-        Return a list of options for the window.
+        Return option value for the target window.
 
         todo: test and return True/False for on/off string