Replace 9.4 with 10, as that's the minimal version we support now with 5.4.1

Signed-off-by: Martín Marqués <martin.marques@enterprisedb.com>

doc/appendix-release-notes.xml

@@ -18,9 +18,9 @@
   <!-- remember to update the release date in ../repmgr_version.h.in -->
   <sect1 id="release-5.4.1">
     <title id="release-current">Release 5.4.1</title>
-    <para><emphasis>??? ?? ??????, 202?</emphasis></para>
+    <para><emphasis>Tue 04 July, 2023</emphasis></para>
     <para>
-      &repmgr; 5.4.1 is a minor release providing ...
+      &repmgr; 5.4.1 is a minor release providing a fix for witness metadata update
     </para>
     <sect2>
       <title>Bug fixes</title>

doc/install-requirements.xml

@@ -14,7 +14,7 @@
   </para>
 
   <para>
-   &repmgr; &repmgrversion; is compatible with all PostgreSQL versions from 9.4. See
+   &repmgr; &repmgrversion; is compatible with all PostgreSQL versions from 10. See
    section <link linkend="install-compatibility-matrix">&repmgr; compatibility matrix</link>
    for an overview of version compatibility.
   </para>
@@ -120,13 +120,13 @@
               &repmgr; 5.4
             </entry>
             <entry>
-              (dev)
+              YES
             </entry>
             <entry>
               <link linkend="release-current">&repmgrversion;</link> (&releasedate;)
             </entry>
             <entry>
-              9.4, 9.5, 9.6, 10, 11, 12, 13, 15
+              10, 11, 12, 13, 14, 15, 16
             </entry>
             <entry>
               &nbsp;

doc/repmgr.xml

@@ -26,7 +26,7 @@
   <abstract>
    <para>
    This is the official documentation of &repmgr; &repmgrversion; for
-   use with PostgreSQL 9.4 - PostgreSQL 15.
+   use with PostgreSQL 10 - PostgreSQL 16.
    </para>
    <para>
      &repmgr; is being continually developed and we strongly recommend using the