adding link form install section to FAQ

Author: jdv

crowdsec-docs/unversioned/bouncers/nginx.mdx

@@ -61,6 +61,11 @@ Install the following packages:
 sudo apt install nginx lua5.1 libnginx-mod-http-lua luarocks gettext-base lua-cjson
 ```
 
+::::warning
+If you have Unbuntu 22.xx, you may have an issue with `lua` module in nginx.  
+Look at [FAQ for more information](#ubuntu-22xx-getting-lua-error).
+::::
+
 ### Using packages
 
 First, [setup crowdsec repositories](/docs/next/getting_started/install_crowdsec#install-our-repositories).
@@ -302,7 +307,7 @@ Here is a config example, but you can change values:
 resolver 8.8.8.8 ipv6=off;
 lua_ssl_trusted_certificate /etc/ssl/certs/ca-certificates.crt;
 ```
-### I have ubuntu 22.xx and I get an error with `lua` 
+### Ubuntu 22.xx getting lua error
 
 Nginx package for Ubuntu 22.xx did not include `lua` module for some issues with other modules.  
 It's fixed and the module is back in the following version of Ubuntu.