Fix typo in 'File Not Found' message

Author: ashm-dev

Lib/idlelib/iomenu.py

@@ -246,7 +246,7 @@ def reload(self, event):
         """
         if not self.filename:
             messagebox.showinfo(
-                “File Not Found",
+                "File Not Found",
                 "This window has no associated file to reload.",
                 parent=self.text)
             self.text.focus_set()