Add caddy-geoip2 to the integrations list

Author: marselester

content/geoip/docs/databases.md

@@ -114,6 +114,7 @@ integrator for assistance. {{</ alert >}}
 | Log Analyzer / Data Processing | Logstash                | [Geoip filter plugin](https://www.elastic.co/docs/reference/logstash/plugins/plugins-filters-geoip)         |
 | Network Protocol Analyzer      | Wireshark               | [How To Use GeoIP With Wireshark](https://gitlab.com/wireshark/wireshark/-/wikis/HowToUseGeoIP)             |
 | Search                         | Elasticsearch           | [GeoIP processor](https://www.elastic.co/docs/reference/enrich-processor/geoip-processor)                   |
+| Web server                     | Caddy                   | [caddy-geoip2](https://github.com/zhangjiayin/caddy-geoip2)                                              |
 
 ## Command Line (mmdbinspect)