Fix config blocks in classic remoting docs (akka#26851)

* Fix config blocks in classic remoting docs

* Update akka-docs/src/main/paradox/remoting.md

* Update akka-docs/src/main/paradox/remoting.md

akka-cluster-metrics/src/multi-jvm/scala/akka/cluster/metrics/sample/StatsSampleSpec.scala

@@ -39,7 +39,7 @@ object StatsSampleSpecConfig extends MultiNodeConfig {
   // note that no fixed host names and ports are used
   commonConfig(ConfigFactory.parseString("""
     akka.actor.provider = cluster
-    akka.remote.log-remote-lifecycle-events = off
+    akka.remote.classic.log-remote-lifecycle-events = off
     akka.cluster.roles = [compute]
     #//#router-lookup-config
     akka.actor.deployment {

akka-cluster-sharding/src/multi-jvm/scala/akka/cluster/sharding/ClusterShardingFailureSpec.scala

@@ -59,7 +59,7 @@ abstract class ClusterShardingFailureSpecConfig(val mode: String) extends MultiN
   commonConfig(ConfigFactory.parseString(s"""
     akka.loglevel = INFO
     akka.actor.provider = "cluster"
-    akka.remote.log-remote-lifecycle-events = off
+    akka.remote.classic.log-remote-lifecycle-events = off
     akka.cluster.auto-down-unreachable-after = 0s
     akka.cluster.roles = ["backend"]
     akka.persistence.journal.plugin = "akka.persistence.journal.leveldb-shared"

akka-cluster-sharding/src/multi-jvm/scala/akka/cluster/sharding/ClusterShardingGetStatsSpec.scala

@@ -48,7 +48,7 @@ object ClusterShardingGetStatsSpecConfig extends MultiNodeConfig {
   commonConfig(ConfigFactory.parseString("""
     akka.loglevel = INFO
     akka.actor.provider = "cluster"
-    akka.remote.log-remote-lifecycle-events = off
+    akka.remote.classic.log-remote-lifecycle-events = off
     akka.log-dead-letters-during-shutdown = off
     akka.cluster.auto-down-unreachable-after = 0s
     akka.cluster.sharding {

akka-cluster-sharding/src/multi-jvm/scala/akka/cluster/sharding/ClusterShardingLeavingSpec.scala

@@ -62,7 +62,7 @@ abstract class ClusterShardingLeavingSpecConfig(val mode: String) extends MultiN
   commonConfig(ConfigFactory.parseString(s"""
     akka.loglevel = INFO
     akka.actor.provider = "cluster"
-    akka.remote.log-remote-lifecycle-events = off
+    akka.remote.classic.log-remote-lifecycle-events = off
     akka.cluster.auto-down-unreachable-after = 0s
     akka.persistence.journal.plugin = "akka.persistence.journal.leveldb-shared"
     akka.persistence.journal.leveldb-shared {

akka-cluster-sharding/src/multi-jvm/scala/akka/cluster/sharding/ClusterShardingRememberEntitiesNewExtractorSpec.scala

@@ -60,7 +60,7 @@ abstract class ClusterShardingRememberEntitiesNewExtractorSpecConfig(val mode: S
   commonConfig(ConfigFactory.parseString(s"""
     akka.actor.provider = "cluster"
     akka.cluster.auto-down-unreachable-after = 0s
-    akka.remote.log-remote-lifecycle-events = off
+    akka.remote.classic.log-remote-lifecycle-events = off
     akka.persistence.journal.plugin = "akka.persistence.journal.leveldb-shared"
     akka.persistence.journal.leveldb-shared {
       timeout = 5s

akka-docs/src/main/paradox/remoting.md

@@ -32,15 +32,16 @@ To use Akka Remoting, you must add the following dependency in your project:
 
 ## Configuration
 
-To enable remote capabilities in your Akka project you should, at a minimum, add the following changes
+To enable classic remoting in your Akka project you should, at a minimum, add the following changes
 to your `application.conf` file:
 
 ```
 akka {
   actor {
     provider = remote
   }
-  remote {
+  remote.artery.enabled = false
+  remote.classic {
     enabled-transports = ["akka.remote.classic.netty.tcp"]
     netty.tcp {
       hostname = "127.0.0.1"
@@ -50,9 +51,10 @@ akka {
 }
 ```
 
-As you can see in the example above there are four things you need to add to get started:
+As you can see in the example above there are five things you need to add to get started:
 
  * Change provider from `local` to `remote`
+ * Disable artery remoting. Artery is the default remoting implementation since `2.6.0`
  * Add host name - the machine you want to run the actor system on; this host
 name is exactly what is passed to remote systems in order to identify this
 system and consequently used for connecting back to this system if need be,
@@ -408,8 +410,8 @@ finished.
 
 @@@ note
 
-In order to switch off the logging, set
-`akka.remote.log-remote-lifecycle-events = off` in your
+In order to disable the logging, set
+`akka.remote.classic.log-remote-lifecycle-events = off` in your
 `application.conf`.
 
 @@@
@@ -456,7 +458,7 @@ An example of setting up the default Netty based SSL driver as default:
 
 ```
 akka {
-  remote {
+  remote.classic {
     enabled-transports = [akka.remote.classic.netty.ssl]
   }
 }
@@ -466,7 +468,7 @@ Next the actual SSL/TLS parameters have to be configured:
 
 ```
 akka {
-  remote {
+  remote.classic {
     netty.ssl {
       hostname = "127.0.0.1"
       port = "3553"
@@ -540,7 +542,7 @@ that system down. This is not always desired, and it can be disabled with the
 following setting:
 
 ```
-akka.remote.untrusted-mode = on
+akka.remote.classic.untrusted-mode = on
 ```
 
 This disallows sending of system messages (actor life-cycle commands,
@@ -566,7 +568,7 @@ permission to receive actor selection messages can be granted to specific actors
 defined in configuration:
 
 ```
-akka.remote.trusted-selection-paths = ["/user/receptionist", "/user/namingService"]
+akka.remote.classic.trusted-selection-paths = ["/user/receptionist", "/user/namingService"]
 ```
 
 The actual message must still not be of type `PossiblyHarmful`.
@@ -619,17 +621,13 @@ containers the hostname and port pair that Akka binds to will be different than
 host name and port pair that is used to connect to the system from the outside. This requires
 special configuration that sets both the logical and the bind pairs for remoting.
 
-```ruby
-akka {
-  remote {
-    netty.tcp {
+```
+akka.remote.classic.netty.tcp {
       hostname = my.domain.com      # external (logical) hostname
       port = 8000                   # external (logical) port
 
       bind-hostname = local.address # internal (bind) hostname
       bind-port = 2552              # internal (bind) port
-    }
- }
 }
 ```