Url for vendor
From Shopify Wiki
url_for_vendor(vendor)
This filter creates an url for a vendor name by URL-encoding it and adding the appropriate directory in front of it to make the url work.
{{ "International Business Machines Corporation" | url_for_vendor }}
The previous example would result in an output like this:
"/collections/vendors?q=International+Business+Machines+Corporation"
You will most likely want to use link_to_vendor instead.