[DOCS] Updating permissions language for RPM install packages (#63277) (#63345)

* Updating permissions language for RPM install packages.

* Fix typo

Author: Adam Locke

docs/reference/setup/install/etc-elasticsearch.asciidoc

@@ -1,11 +1,13 @@
-Elasticsearch defaults to using `/etc/elasticsearch` for runtime configuration.
-The ownership of this directory and all files in this directory are set to
-`root:elasticsearch` on package installation and the directory has the `setgid`
-flag set so that any files and subdirectories created under `/etc/elasticsearch`
-are created with this ownership as well (e.g., if a keystore is created using
-the <<secure-settings,keystore tool>>). It is expected that this be maintained so
-that the Elasticsearch process can read the files under this directory via the
-group permissions.
+The `/etc/elasticsearch` directory contains the default runtime configuration
+for {es}. The ownership of this directory and all contained files are set to
+`root:elasticsearch` on package installations.
+
+The `setgid` flag applies group permissions on the `/etc/elasticsearch`
+directory to ensure that {es} can read any contained files and subdirectories.
+All files and subdirectories inherit the `root:elasticsearch` ownership.
+Running commands from this directory or any subdirectories, such as the
+<<secure-settings,elasticsearch-keystore tool>>, requires `root:elasticsearch`
+permissions.
 
 Elasticsearch loads its configuration from the
 `/etc/elasticsearch/elasticsearch.yml` file by default.  The format of this