docs: Fix pipe examples
docs: Fix pipe examples

Fixes #2787

gohugoio/hugo,fedelibre/hugo,mayah/hugo,fedelibre/hugo,mdhender/hugo,anthonyfok/hugo,gohugoio/hugo,anthonyfok/hugo,tubo028/hugo,fedelibre/hugo,digitalcraftsman/hugo,anthonyfok/hugo,fedelibre/hugo,mitchchn/hugo,gohugoio/hugo,jygastaud/hugo,digitalcraftsman/hugo,tubo028/hugo,jygastaud/hugo,mayah/hugo,mdhender/hugo,MarkDBlackwell/hugo,mitchchn/hugo,mdhender/hugo,mdhender/hugo,MarkDBlackwell/hugo