How to make a separate Django page resizable through the admin?

Question

Django

Dear experts, please tell me how to make it possible to change the "About the company" page through the django admin panel without going into the html code of the page in the future, the model created

class About(models.Model):
    title = models.CharField(max_length=255, verbose_name="Каталог")
    slug = models.SlugField(max_length=255, verbose_name="URL", unique=True)
    text = models.TextField(verbose_name='О компании', blank=True)
    image = models.ImageField(upload_to='image/%Y/%m/', verbose_name='Картинка', blank=True)

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse('catalog', kwargs={"slug": self.slug})

    class Meta:
        verbose_name = 'О компании'
        verbose_name_plural = 'О компании '

vyuha

class AboutBy(DetailView):
    model = About
    template_name = 'about.html'
    context_object_name = 'about'

    def get_context_data(self, *, object_list=None, **kwargs):
        context = super(AboutBy, self).get_context_data(**kwargs)
        context['title'] = 'О компании'
        return context

URL

path('<str:slug>/', AboutBy.as_view(), name='about'),

Answer 1

https://docs.djangoproject.com/en/3.1/ref/contrib/...

Answer 2

and through the standard django-admin tools, django- admin is not suitable

@admin.register(About)
class AboutAdmin(admin.ModelAdmin):
   ....