Replace '_remote_access' with REMOTE_CLUSTER_PROFILE in comment (#130489)

There isn't a '_remote_access' profile, it looks like the
author meant to write '_remote_cluster'.  This commit changes
it to REMOTE_CLUSTER_PROFILE to match the code below and avoid
confusing the reader with a profile name that doesn't exist.

Author: JeremyDahlgren

server/src/main/java/org/elasticsearch/transport/RemoteClusterPortSettings.java

@@ -158,7 +158,7 @@ static void validateRemoteAccessSettings(Settings settings) {
     public static TcpTransport.ProfileSettings buildRemoteAccessProfileSettings(Settings settings) {
         validateRemoteAccessSettings(settings);
 
-        // Build a synthetic settings object with the `_remote_access` profile properly configured per the friendlier settings,
+        // Build a synthetic settings object with the REMOTE_CLUSTER_PROFILE properly configured per the friendlier settings,
         Settings syntheticRemoteAccessProfile = Settings.builder()
             .put(settings)
             .put(TCP_KEEP_ALIVE_PROFILE.getConcreteSettingForNamespace(REMOTE_CLUSTER_PROFILE).getKey(), TCP_KEEP_ALIVE.get(settings))