Updated doc to reflect current support for FT thread pool properties. (helidon-io#6621)

Author: spericas

docs/mp/fault-tolerance.adoc

@@ -1,6 +1,6 @@
 ///////////////////////////////////////////////////////////////////////////////
 
-    Copyright (c) 2021, 2022 Oracle and/or its affiliates.
+    Copyright (c) 2021, 2023 Oracle and/or its affiliates.
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -154,9 +154,8 @@ the calling thread on I/O or on a long-running computation.
 
 == Configuration
 
-Helidon's implementation uses two types of thread pools: normal and scheduled. The default
-core size of these executors is 20; however, that can be configured using an `application.yaml`
-file as follows:
+Helidon’s implementation uses two types of thread pools: normal and scheduled. The default core
+size of these executors is 20; however, that can be configured using in your `application.yaml` file:
 
 [source,yaml]
 ----
@@ -167,8 +166,13 @@ scheduled-executor:
   core-pool-size: 32
 ----
 
-NOTE: There is currently _no support_ to configure these executor properties via a
-`microprofile-config.properties` file.
+or in your `microprofile-config.properties` as follows:
+
+[source,properties]
+----
+executor.core-pool-size=32
+scheduled-executor.core-pool-size=32
+----
 
 For a complete set of properties available to configure these executors, see
 link:{configurable-javadoc-base-url}/io/helidon/common/configurable/ThreadPoolSupplier.Builder.html#config(io.helidon.config.Config)[ServerThreadPoolSupplier] and