Django:如何从表单clean()方法中的django验证错误中添加<a>超链接？

from django import forms

class MyForm(forms.Form):
    field1 = forms.CharField()
    field2 = forms.CharField()

    def clean(self):
        cleaned_data = super().clean()
        field1 = cleaned_data.get("field1")
        field2 = cleaned_data.get("field2")

        if field1 != field2:
            error_message = "两个字段的值不相等。请查看 <a href='https://example.com'>这个链接</a> 以获取更多信息。"
            self.add_error('field1', error_message)
            self.add_error('field2', error_message)