Add docs about minion config file in standalone minion docs

Fixes saltstack#15252

doc/topics/tutorials/standalone_minion.rst

@@ -17,6 +17,20 @@ things:
     Otherwise, it will attempt to connect to a master and fail. The salt-call
     command stands on its own and does not need the salt-minion daemon.
 
+
+Minion Configuration
+--------------------
+
+Throughout this document there are several references to setting different
+options to configure a masterless Minion. Salt Minions are easy to configure
+via a configuration file that is located, by default, in ``/etc/salt/minion``.
+Note, however, that on FreeBSD systems, the minion configuration file is located
+in ``/usr/local/etc/salt/minion``.
+
+You can learn more about minion configuration options in the
+:ref:`Configuring the Salt Minion <configuration-salt-minion>` docs.
+
+
 Telling Salt Call to Run Masterless
 ===================================
 
@@ -39,7 +53,6 @@ Now the salt-call command will not look for a master and will assume that the
 local system has all of the file and pillar resources.
 
 
-
 Running States Masterless
 =========================
 
@@ -81,6 +94,7 @@ it unnecessary to change the configuration file:
 
     salt-call state.apply --local
 
+
 External Pillars
 ================