nginx - fix apt preference config without newlines

seqs/nginx.sh

@@ -49,7 +49,7 @@ step_10() {
   info "Setup php repository including gpg key"
   exep curl -fsSL  ${sq_keyUrl:?}/nginx_signing.key "|" gpg --dearmor -o "/etc/apt/trusted.gpg.d/nginx-keyring.gpg"
   addConf -c "deb ${lArch:-} ${sq_repoUrl:?} $(lsb_release -sc) nginx" "/etc/apt/sources.list.d/nginx.list"
-  addConf -s "Package: *\nPin: origin nginx.org\nPin: release o=nginx\nPin-Priority: 900\n" \
+  addConf -es "Package: *\nPin: origin nginx.org\nPin: release o=nginx\nPin-Priority: 900" \
     /etc/apt/preferences.d/99nginx
   exe apt update
 }