[gimp-help/gimp-help-2-10] src: fixing configuration folder name.

[Jehan <jehanp src gnome org>]

commit f9a2100959b03ea321d3fc5db50945595c513919
Author: Jehan <jehan girinstud io>
Date:   Mon Mar 21 14:22:06 2022 +0100

    src: fixing configuration folder name.
    
    Also adding location info.

 src/concepts/setup.xml | 29 ++++++++++++++++++++++++++---
 1 file changed, 26 insertions(+), 3 deletions(-)
---
diff --git a/src/concepts/setup.xml b/src/concepts/setup.xml
index 96eb3ac6a..53d8dafb4 100644
--- a/src/concepts/setup.xml
+++ b/src/concepts/setup.xml
@@ -20,17 +20,40 @@
   <para>
     When first run, <acronym>GIMP</acronym> performs a series of steps to
     configure options and directories. The configuration process creates a
-    subdirectory in your home directory named
-    <filename class="directory">.gimp-2.10</filename>. All of the
+    a user-writable configuration directory named
+    <filename class="directory">GIMP</filename>, with a per-version subdirectory,
+    i.e. <filename class="directory">GIMP/2.10</filename>. All of the
     configuration information is stored in this directory. If you remove
     or rename the directory, <acronym>GIMP</acronym> repeats the initial
     configuration process, creating a new
-    <filename class="directory">.gimp-2.10</filename>
+    <filename class="directory">GIMP/2.10</filename>
     directory. Use this capability to explore different configuration
     options without deleting your existing installation, or to recover if
     your configuration files are damaged.
   </para>
 
+  <para>
+    The configuration folder will be stored in:
+    <itemizedlist>
+      <listitem>
+        <para>
+          <code>$XDG_CONFIG_HOME</code> (defaulting to <code>$HOME/.config</code>)
+          on UNIX platforms, except macOS;
+        </para>
+      </listitem>
+      <listitem>
+        <para>
+          <code>%APPDATA%</code> on Windows;
+        </para>
+      </listitem>
+      <listitem>
+        <para>
+          <code>NSApplicationSupportDirectory</code> (usually <code>~/Library/Application Support</code>) on 
macOS.
+        </para>
+      </listitem>
+    </itemizedlist>
+  </para>
+
   <sect2>
     <title>Finally . . . </title>
     <para>