tpl/urls: Make urlize return a string
tpl/urls: Make urlize return a string

Like it did in 0.20.

digitalcraftsman/hugo,fedelibre/hugo,fedelibre/hugo,mitchchn/hugo,gohugoio/hugo,fedelibre/hugo,anthonyfok/hugo,mdhender/hugo,gohugoio/hugo,mdhender/hugo,digitalcraftsman/hugo,anthonyfok/hugo,fedelibre/hugo,mitchchn/hugo,anthonyfok/hugo,mdhender/hugo,gohugoio/hugo,mdhender/hugo