Update sysinfo unit page

Fixed errors in names of files included in release
Fixed broken link to change log
Added link to read-me file
Updated copyright date

Author: delphidabbler

_software/sysinfo.html

@@ -178,10 +178,10 @@ <h2 class="panel-title">
         <strong><code>PJSysInfo.pas</code></strong> &ndash; the source code.
       </li>
       <li class="list-group-item">
-        <code>ReadMe.htm</code> &ndash; read-me file.
+        <code>README.md</code> &ndash; read-me file.
       </li>
       <li class="list-group-item">
-        <code>ChangeLog.txt</code> &ndash; project change log.
+        <code>CHANGELOG.md</code> &ndash; project change log.
       </li>
       <li class="list-group-item">
         <code>MPL-2.txt</code> &ndash; the Mozilla Public License v2.0.
@@ -222,10 +222,10 @@ <h2 class="panel-title">
       <a href="{{ page.docs-url }}" aria-title="View the online documentation">here</a>
     </p>
     <p>
-      The project's change log can be viewed <a href="https://github.com/ddablib/sysinfo/blob/develop/CHANGELOG.md" aria-title="View the change log in markdown format">here</a>.
+      Read-me file: <code><a href="https://github.com/ddablib/sysinfo/blob/main/README.md" aria-title="View the read me file in Markdown format">README.md</a></code>
     </p>
     <p>
-      A read-me file (<code>ReadMe.htm</code>) is included in the project download.
+      Change log: <code><a href="https://github.com/ddablib/sysinfo/blob/main/CHANGELOG.md" aria-title="View the change log in Markdown format">CHANGELOG.md</a></code>.
     </p>
   </div>
 </section>
@@ -257,7 +257,7 @@ <h2 class="panel-title">
   </div>
   <div class="panel-body">
     <p>
-      <span class="fa fa-copyright fa-pull-left fa-3x"></span> The <em>{{ page.title }}</em> is open source. It is copyright &copy; 2001-2020 by <a href="https://en.gravatar.com/delphidabbler" aria-label="Peter Johnson's Gravatar account">Peter Johnson</a>. The source code is made available under the terms of the <a href="https://www.mozilla.org/MPL/2.0/" aria-label="Mozilla Public License v2.0 on mozilla.org">Mozilla Public License v2.0</a>. All relevant trademarks are acknowledged.
+      <span class="fa fa-copyright fa-pull-left fa-3x"></span> The <em>{{ page.title }}</em> is open source. It is copyright &copy; 2001-2023 by <a href="https://en.gravatar.com/delphidabbler" aria-label="Peter Johnson's Gravatar account">Peter Johnson</a>. The source code is made available under the terms of the <a href="https://www.mozilla.org/MPL/2.0/" aria-label="Mozilla Public License v2.0 on mozilla.org">Mozilla Public License v2.0</a>. All relevant trademarks are acknowledged.
     </p>
     <p>
       Information from numerous websites has been used while developing this code. Several individuals have also suggested solutions or contributed code. Details are provided in the file <a href="https://github.com/ddablib/sysinfo/blob/main/Docs/Acknowledgements.md"><code>Acknowledgements.md</code></a> in the <code>.\Docs</code> subdirectory of the {{ page.title }}'s GitHub repository.