Syntax for links to fileserver documents

Hello

I need some help with the following please

I loaded 2 documents via ftp to my fileserver and tried to link them from my wp blog and also another static page.

I linked https://www.alkalinebydesign.co.uk/documents/health-form.doc and also https://www.alkalinebydesign.co.uk/alkalisingmadeeasy.pdf and for some reason, it doesnt like the syntax and comes back with a 404.

Can someone please tell me what the correct syntax is? What am I missing?

Thankyou
Kate