update error message to match the text fixing the ValidationError

Author: Xronophobe

chapter_14_simple_form.asciidoc

@@ -645,33 +645,32 @@ Ran 17 tests in 0.126s
 OK
 ----
 
-And the functional tests too:
+And the functional tests too, where we can see three errors:
 
-[subs="specialcharacters,macros"]
 ----
-$ pass:quotes[*python src/manage.py test functional_tests*]
+ERROR: test_layout_and_styling (functional_tests.test_layout_and_styling.LayoutAndStylingTest.test_layout_and_styling)
 [...]
-  File "...goat-book/src/functional_tests/test_layout_and_styling.py", line 27,
-in test_layout_and_styling
-    inputbox = self.get_item_input_box()
-               ^^^^^^^^^^^^^^^^^^^^^^^^^
-  File "...goat-book/src/functional_tests/base.py", line 45, in
-get_item_input_box
-    return self.browser.find_element(By.ID, "id_text")
-           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+selenium.common.exceptions.NoSuchElementException: Message: Unable to locate
+element: [id="id_text"];
+[...]
+ERROR: test_can_start_a_todo_list (functional_tests.test_simple_list_creation.NewVisitorTest.test_can_start_a_todo_list)
 [...]
 selenium.common.exceptions.NoSuchElementException: Message: Unable to locate
-element: [id="id_text"]; [...]
-
+element: [id="id_text"];
 [...]
-FAILED (errors=3)
 ----
 
-Not quite!  Let's look at where this is happening--if
-you check the line number from one of the failures,
-you'll see that each time after we've submitted a first item,
-the input box has disappeared from the lists page.
+and
+
+----
+ERROR: test_cannot_add_empty_list_items (functional_tests.test_list_item_validation.ItemValidationTest.test_cannot_add_empty_list_items)
+[...]
+selenium.common.exceptions.NoSuchElementException: Message: Unable to locate
+element: .invalid-feedback;
+[...]
+----
 
+Let's start with the latter.
 Checking _views.py_ and the `new_list` view we can see
 it's because if we detect a validation error,
 we're not actually passing the form to the _home.html_ template: