Add link to topics page from main page
Add link to topics page from main page

JATS4R/website,JATS4R/website,JATS4R/jats4r.github.io,JATS4R/jats4r.github.io,JATS4R/jats4r.github.io,JATS4R/website,JATS4R/website,JATS4R/jats4r.github.io