releaser: Fix ldflags setting
releaser: Fix ldflags setting

Closes #3382
mitchchn/hugo,mitchchn/hugo,mdhender/hugo,anthonyfok/hugo,gohugoio/hugo,gohugoio/hugo,anthonyfok/hugo,digitalcraftsman/hugo,fedelibre/hugo,fedelibre/hugo,mdhender/hugo,mdhender/hugo,fedelibre/hugo,gohugoio/hugo,mdhender/hugo,anthonyfok/hugo,fedelibre/hugo,digitalcraftsman/hugo