Update planka.sh (#6058)

Author: tremor021

ct/planka.sh

@@ -28,7 +28,7 @@ function update_script() {
     msg_error "No ${APP} Installation Found!"
     exit
   fi
-  RELEASE=$(curl -s https://api.github.com/repos/plankanban/planka/releases/latest | grep "tag_name" | awk '{print substr($2, 2, length($2)-3) }')
+  RELEASE=$(curl -s https://api.github.com/repos/plankanban/planka/releases/latest | grep "tag_name" | awk '{print substr($2, 3, length($2)-4) }')
   if [[ "${RELEASE}" != "$(cat ~/.planka 2>/dev/null)" ]] || [[ ! -f ~/.planka ]]; then
     msg_info "Stopping $APP"
     systemctl stop planka