Cosmetics: “zip” is not an acronym, so should not be all-uppercase

_includes/download-snapshot.html

@@ -33,7 +33,7 @@
         {% endfor %}
       </div>
     <br />
-    <p>ZIP archive:</p>
+    <p>Zip archive:</p>
       <div class="download_table">
         {% assign snapshot_files = (site.static_files | where: "snapshot", "windows-zip" | sort: 'modified_time') | reverse %}
         {% for snapshot in snapshot_files %}

_includes/download-stable.html

@@ -19,7 +19,7 @@
       <a href="https://ftp.gnu.org/gnu/octave/windows/octave-4.4.1-w64-installer.exe">64-bit</a>
       or <a href="https://ftp.gnu.org/gnu/octave/windows/octave-4.4.1-w32-installer.exe">32-bit</a>)
     </p>
-    <p>Both an executable installer and a ZIP archive are available.</p>
+    <p>Both an executable installer and a zip archive are available.</p>
     <p class="stable">
       <i class="fas fa-file-download"></i>
       {% assign release = site.static_files | where: "release", "windows-exe" | first %}