GIMP: some tweaks to the help file installation

- Use ./configure instead of .autogen.sh
- don't tell to use the online help, since it is in the same state
  as the local one.

xsoft/other/gimp.xml

@@ -104,15 +104,14 @@
        generated HTML, only their captions are visible).
       </para>
     </note>
-
+-->
     <note>
       <para>
-        Updating the help files is still a work in progress, with large
-        parts of the text for many languages not yet translated. The file below
-        is a git snapshot.
+        The help files English version is complete, but large
+        parts of the text for many other languages are not yet translated.
       </para>
     </note>
--->
+
 
     <itemizedlist spacing="compact">
       <listitem>
@@ -250,24 +249,27 @@ make</userinput></screen>
 
     <para>
       The <filename>gimp-help</filename> tarball contains images and English
-      text help for help files, together with translations. Because of the
+      text help for help files, together with translations. <!--
+      The documentation generated by gimp-help-2.10.34 and online help have
+      the same contents, so I comment this out. [pierre Nov. 2023]
+      Because of the
       issues mentioned in the note above, you are recommended to use the online
       help, either by building against <xref linkend="gvfs"/> so that 'help'
       can open the latest XML files in your browser, or else you can manually
       open the html in your browser by going to <ulink
       url="https://docs.gimp.org/2.10/en/">https://docs.gimp.org/2.10/en</ulink>
-      (change the language code if desired).
+     (change the language code if desired).-->
     </para>
 
     <para>
-      If you nevertheless wish to install local copies of the help files to read
-      offline, unpack the <filename>gimp-help</filename> tarball
+      <!--     If you nevertheless wish to install local copies of the help files to read
+      offline, u-->Unpack the <filename>gimp-help</filename> tarball
       and change into the root of the newly created source tree. Prepare for
       the build with the following command:
     </para>
 
 <screen><userinput>ALL_LINGUAS=&quot;ca cs da de en en_GB es fa fr hr ko lt nl nn pt pt_BR ro sl sv uk zh_CN&quot; \
-./autogen.sh --prefix=/usr</userinput></screen>
+./configure --prefix=/usr</userinput></screen>
 
     <para>
       Remove from <envar>ALL_LINGUAS</envar> the codes for any languages which