Lint and changelog

vizro-core/changelog.d/20231218_204302_antony.milne_improve_dashboard_title.md

@@ -16,16 +16,15 @@ Uncomment the section that is right (remove the HTML comment wrapper).
 - A bullet item for the Removed category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
 
 -->
-<!--
+
 ### Added
 
-- A bullet item for the Added category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+- When set, the dashboard title appears alongside the individual page title as the text labelling a browser tab. ([#228](https://github.com/mckinsey/vizro/pull/228))
 
--->
 <!--
 ### Changed
 
-- A bullet item for the Changed category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+- A bullet item for the Changed category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#228](https://github.com/mckinsey/vizro/pull/228))
 
 -->
 <!--

vizro-core/tests/unit/vizro/models/test_dashboard.py

@@ -1,15 +1,11 @@
-import functools
 import json
-from collections import OrderedDict
-from functools import partial
 
 import dash
 import dash_bootstrap_components as dbc
 import plotly
 import pytest
-from dash import html
-
 from asserts import assert_component_equal
+from dash import html
 
 try:
     from pydantic.v1 import ValidationError
@@ -116,7 +112,7 @@ def test_make_page_404_layout(self, vizro_app):
         # vizro_app fixture is needed to avoid mocking out get_relative_path.
         expected = html.Div(
             [
-                html.Img(src=f"/vizro/images/errors/error_404.svg"),
+                html.Img(src="/vizro/images/errors/error_404.svg"),
                 html.Div(
                     [
                         html.Div(