Ok guys I sorted it out I had to hard code some part of the hyperlink in the Sharepoint Designer email workflow activity such as this:
<a href="http://servername/documentlibraryname/_layouts/formserver.aspx?XmlLocation=[%documentlibraryname:Encoded Absolute URL%]&OpenIn=Browser"]text</a>
With this format above I can get the form to open in the browser from an email link.
Thanks guys for tips