symtable fix 8

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>

Author: Yashp002

Lib/symtable.py

@@ -231,7 +231,7 @@ def get_frees(self):
         return self.__frees
 
     def get_cells(self):
-        """Return a list of cell variable names in the table.
+        """Return a tuple of cell variable names in the table.
         """
         if self.__cells is None:
             is_cell = lambda x: _get_scope(x) == CELL