I am not sure I understand your question.
Are you trying to embed your form in your website?
Are you trying to add the link of your form on your website?
>> On your website, you will need to add a <a> tag on the page you want to add the link to be added to
Are you trying to add a link to your website inside your form?
>> On the Design Tab add a Formatted Text element. Type some text. Select the text. Right click on the selected text. Select Insert link...
Hope this helps