add linkedin badge on profil bio

The badge is a link to the linkedin profile

added To Do label

assigned to @Plumtree3D

changed the description

added Doing label and removed To Do label

created branch 28-add-linkedin-badge-on-profil-bio to address this issue

created branch 28-add-linkedin-badge-on-profil-bio-2 to address this issue

mentioned in merge request !20 (closed)

mentioned in merge request !21 (merged)

added Need review label and removed Doing label

mentioned in commit 81c6a27f

closed with merge request !21 (merged)

removed Need review label