Update links to Gerrit 3.8.3 as the latest

Change-Id: I66e553862490804e998733c56c2192f3aa2353a6

_data/topnav.yml

@@ -20,7 +20,7 @@ topnav_dropdowns:
         - title: Members
           url: /members.html
         - title: Contributing
-          external_url: https://gerrit-documentation.storage.googleapis.com/Documentation/3.8.2/dev-community.html#how-to-contribute
+          external_url: https://gerrit-documentation.storage.googleapis.com/Documentation/3.8.3/dev-community.html#how-to-contribute
         - title: Fixing a bug
           url: /bug-fixing.html
         - title: Presentations
@@ -48,7 +48,7 @@ topnav_dropdowns:
     - title: Docs
       folderitems:
         - title: Latest
-          external_url: https://gerrit-documentation.storage.googleapis.com/Documentation/3.8.2/index.html
+          external_url: https://gerrit-documentation.storage.googleapis.com/Documentation/3.8.3/index.html
         - title: Designs
           url: /design-docs-index.html
         - title: Wiki

index.md

@@ -68,9 +68,9 @@ toc: false
                 <div class="panel-body">
                     <h4>Download</h4>
                     <p>Our latest release is:<br>
-                    <b><a href="3.8.html">3.8.2</a></b>
+                    <b><a href="3.8.html">3.8.3</a></b>
                     </p>
-                    <a href="https://gerrit-releases.storage.googleapis.com/gerrit-3.8.2.war" class="btn btn-primary">Download</a>
+                    <a href="https://gerrit-releases.storage.googleapis.com/gerrit-3.8.3.war" class="btn btn-primary">Download</a>
                 </div>
             </div>
         </div>