Вы можете обновить порядок так:
# Please read PEP-8 Docs for naming
# Class name should be Pascal Case
class snippet_form_model(models.Model):
title = models.CharField(max_length=500)
language = models.CharField(max_length=50)
code = models.TextField()
describe = models.TextField()
class Meta:
ordering = ['-id'] # as you don't have created field. Reverse by ID will also show give you snippet_form_model in reverse order
def __str__(self):
return self.title