change opt path variable name

ct/huntarr.sh

@@ -30,7 +30,7 @@ function update_script() {
     fi
 
     RELEASE=$(curl -fsSL https://api.github.com/repos/plexguide/Huntarr.io/releases/latest | grep "tag_name" | awk '{print substr($2, 2, length($2)-3)}')
-    if [[ "${RELEASE}" != "$(cat /opt/"${APP}"_version.txt)" ]] || [[ ! -f /opt/${APP}_version.txt ]]; then
+    if [[ "${RELEASE}" != "$(cat /opt/huntarr_version.txt)" ]] || [[ ! -f /opt/huntarr_version.txt ]]; then
         msg_info "Stopping $APP"
         systemctl stop huntarr
         msg_ok "Stopped $APP"