Add a link on poll box header title toward global poll section
Add a link on poll box header title toward global poll section

This box missed a link on its main h1 title, although it was
totally relevant in this context (not every box has a link but
similar ones do have one).

This patch introduces it.

linuxfrorg/linuxfr.org,linuxfrorg/linuxfr.org,linuxfrorg/linuxfr.org,linuxfrorg/linuxfr.org