Package installation docs minor change (#84177)

Make it clearer that security configuration happens on installation
and not on first start of Elasticsearch.

docs/reference/setup/install/deb.asciidoc

@@ -130,7 +130,9 @@ sudo dpkg -i elasticsearch-{version}-amd64.deb
 
 endif::[]
 
-[[deb-security-configuration]]
+// Set a `distro` attribute so we can reuse files containing anchors
+:distro: deb
+[id="deb-security-configuration"]
 include::package-security.asciidoc[]
 
 ifdef::include-xpack[]
@@ -142,7 +144,7 @@ include::xpack-indices.asciidoc[]
 
 endif::include-xpack[]
 
-[[deb-running-systemd]]
+[id="{distro}-running-systemd"]
 include::systemd.asciidoc[]
 
 [[deb-check-running]]

docs/reference/setup/install/package-security.asciidoc

@@ -2,8 +2,8 @@
 ==== Start {es} with security enabled
 
 When installing {es}, security features are enabled and configured by default.
-When you start {es} for the first time, the following security configuration
-occurs automatically: 
+When you install {es}, the following security configuration
+occurs automatically:
 
 * Authentication and authorization are enabled, and a password is generated for
 the `elastic` built-in superuser.
@@ -39,7 +39,7 @@ Generate an enrollment token for Elasticsearch nodes with
 
 ===== Reconfigure a node to join an existing cluster
 
-When you start {es} for the first time, the installation process configures a
+When you install {es}, the installation process configures a
 single-node cluster by default. If you want a node to join an existing cluster
 instead, generate an enrollment token on an existing node _before_ you start
 the new node for the first time.
@@ -48,24 +48,19 @@ the new node for the first time.
 +
 [source, sh]
 ----
-bin/elasticsearch-create-enrollment-token -s node
+/usr/share/elasticsearch/bin/elasticsearch-create-enrollment-token -s node
 ----
 
 . Copy the enrollment token, which is output to your terminal.
 
-. On your new {es} node, pass the enrollment token as a parameter to the 
+. On your new {es} node, pass the enrollment token as a parameter to the
 `elasticsearch-reconfigure-node` tool:
 +
 [source, sh]
 ----
-bin/elasticsearch-reconfigure-node --enrollment-token <enrollment-token>
+/usr/share/elasticsearch/bin/elasticsearch-reconfigure-node --enrollment-token <enrollment-token>
 ----
 +
 {es} is now configured to join the existing cluster.
 
-. Start your new node.
-+
-[source, sh]
-----
-bin/elasticsearch
-----
+. <<{distro}-running-systemd, Start your new node using `systemd`>>.

docs/reference/setup/install/rpm.asciidoc

@@ -123,7 +123,9 @@ endif::[]
 
 include::skip-set-kernel-parameters.asciidoc[]
 
-[[rpm-security-configuration]]
+// Set a `distro` attribute so we can reuse files containing anchors
+:distro: rpm
+[id="rpm-security-configuration"]
 include::package-security.asciidoc[]
 
 ifdef::include-xpack[]
@@ -135,7 +137,7 @@ include::xpack-indices.asciidoc[]
 
 endif::include-xpack[]
 
-[[rpm-running-systemd]]
+[id="{distro}-running-systemd"]
 include::systemd.asciidoc[]
 
 [[rpm-check-running]]