[Doxygen] Call tutorials "code examples" as on the website
[Doxygen] Call tutorials "code examples" as on the website

compensate longer button title shortening "ROOT Home Page" to "ROOT Home"

karies/root,karies/root,olifre/root,karies/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,olifre/root,karies/root,olifre/root,root-mirror/root,olifre/root,karies/root,olifre/root,root-mirror/root,root-mirror/root,karies/root,olifre/root,karies/root,karies/root,olifre/root,olifre/root,root-mirror/root,root-mirror/root,root-mirror/root,karies/root,olifre/root,root-mirror/root,karies/root,root-mirror/root,root-mirror/root,olifre/root