Hint for deprecated ShowEntryDialog references the wrong type

[pbrown12303]

The entry reads:

func ShowEntryDialog
func ShowEntryDialog(title, message string, onConfirm func(string), parent fyne.Window)
ShowEntryDialog creates a new entry dialog and shows it immediately.

Deprecated: Use dialog.ShowFormDialog() with a widget.Entry inside instead.

There is no dialog.ShowFormDialog(). The reference should be to dialog.ShowForm()

[andydotxyz]

Fixed on develop, the update will roll out on release