Update event handler docs (#53021)

Documents #53006

Author: zmb3

docs/pages/includes/configure-event-handler.mdx

@@ -13,7 +13,7 @@ $ teleport-event-handler configure . mytenant.teleport.sh:443
 <TabItem scope={["oss", "enterprise"]} label="Self-Hosted">
 
 Run the `configure` command to generate a sample configuration. Replace
-`teleport.example.com:443` with the DNS name and HTTPS port of Teleport's Proxy
+`mytenant.teleport.sh:443` with the DNS name and HTTPS port of Teleport's Proxy
 Service:
 
 ```code
@@ -110,8 +110,5 @@ the value of `--cn`.
 
 The `--dns-names` flag accepts a comma-separated list of DNS names. It will
 append subject alternative names (SANs) to the server certificate (the one you
-will provide to your log forwarder) for each DNS name in the list. The Event
-Handler looks up each DNS name before appending it as an SAN and exits with an
-error if the lookup fails.
-
+will provide to your log forwarder) for each DNS name in the list.
 </Details>