Update the PDF.js web page to link to both versions of the demo viewer (PR 11241 follow-up)
Update the PDF.js web page to link to both versions of the demo viewer (PR 11241 follow-up)

Rather than adding two buttons, it seems easier to simply link to the relevant section of the README instead (since it also means fewer things to keep up-to-date).

nawawi/pdf.js,Shoobx/pdf.js,mozilla/pdf.js,Snuffleupagus/pdf.js,macroplant/pdf.js,Snuffleupagus/pdf.js,showpad/mozilla-pdf.js,mozilla/pdf.js,xavier114fch/pdf.js,macroplant/pdf.js,xavier114fch/pdf.js,nawawi/pdf.js,caremerge/pdf.js,nawawi/pdf.js,caremerge/pdf.js,Shoobx/pdf.js,Shoobx/pdf.js,showpad/mozilla-pdf.js,macroplant/pdf.js,showpad/mozilla-pdf.js,timvandermeij/pdf.js,timvandermeij/pdf.js,timvandermeij/pdf.js,Snuffleupagus/pdf.js,mozilla/pdf.js