Update links to 2.13

Change-Id: I266379fd0b9c1abe48c7cdf99cd51e035325c10c
diff --git a/index.md b/index.md
index 289d5cb..c564db8 100644
--- a/index.md
+++ b/index.md
@@ -24,7 +24,7 @@
 
 ## Download
 
-[Gerrit 2.12.4][download]
+[Gerrit 2.13][download]
 
 ***
 
@@ -89,7 +89,7 @@
 
 |||---|||
 
-[download]: https://gerrit-documentation.storage.googleapis.com/ReleaseNotes/ReleaseNotes-2.12.4.html
-[git gc]: https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.4/config-gerrit.html#gc
-[plugins]: https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.4/config-plugins.html
+[download]: https://gerrit-documentation.storage.googleapis.com/ReleaseNotes/ReleaseNotes-2.13.html
+[git gc]: https://gerrit-documentation.storage.googleapis.com/Documentation/2.13/config-gerrit.html#gc
+[plugins]: https://gerrit-documentation.storage.googleapis.com/Documentation/2.13/config-plugins.html
 [replicate]: https://gerrit.googlesource.com/plugins/replication/+doc/master/src/main/resources/Documentation/config.md
diff --git a/navbar.md b/navbar.md
index 174d354..cd6e05c 100644
--- a/navbar.md
+++ b/navbar.md
@@ -2,7 +2,7 @@
 
 * [About](/about.md)
 * [Downloads](https://gerrit-releases.storage.googleapis.com/index.html)
-* [Documentation](https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.3/index.html)
+* [Documentation](https://gerrit-documentation.storage.googleapis.com/Documentation/2.13/index.html)
 * [Issues](/issues.md)
 * [Wiki](https://gerrit.googlesource.com/homepage/+/md-pages/docs/)
 * [Source](https://gerrit.googlesource.com/gerrit/)