Update geoip.asciidoc (#107094)

The documention mention that we can use the proxy.
But here the workaround mention the usage of reverse proxy

The proxy feature for geoip download is not yet supported 
#77069 (comment)

docs/reference/ingest/processors/geoip.asciidoc

@@ -321,15 +321,15 @@ GET /my_ip_locations/_search
 If you can't <<geoip-automatic-updates,automatically update>> your GeoIP2
 databases from the Elastic endpoint, you have a few other options:
 
-* <<use-proxy-geoip-endpoint,Use a proxy endpoint>>
+* <<use-reverse-proxy-geoip-endpoint,Use a reverse proxy endpoint>>
 * <<use-custom-geoip-endpoint,Use a custom endpoint>>
 * <<manually-update-geoip-databases,Manually update your GeoIP2 databases>>
 
-[[use-proxy-geoip-endpoint]]
-**Use a proxy endpoint**
+[[use-reverse-proxy-geoip-endpoint]]
+**Use a reverse proxy endpoint**
 
 If you can't connect directly to the Elastic GeoIP endpoint, consider setting up
-a secure proxy. You can then specify the proxy endpoint URL in the
+a secure reverse proxy. You can then specify the reverse proxy endpoint URL in the
 <<ingest-geoip-downloader-endpoint,`ingest.geoip.downloader.endpoint`>> setting
 of each node’s `elasticsearch.yml` file.