[release-branch.go1.13-security] doc: add Go 1.13 to release history
Change-Id: I3340561c0b17bf28d8d480e00f5bc8afb2a897ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/193042
Run-TryBot: Andrew Bonventre <andybons@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/558786
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
diff --git a/doc/contrib.html b/doc/contrib.html
index fc853a9..5699f58 100644
--- a/doc/contrib.html
+++ b/doc/contrib.html
@@ -34,6 +34,7 @@
<p>A <a href="/doc/devel/release.html">summary</a> of the changes between Go releases. Notes for the major releases:</p>
<ul>
+ <li><a href="/doc/go1.13">Go 1.13</a> <small>(September 2019)</small></li>
<li><a href="/doc/go1.12">Go 1.12</a> <small>(February 2019)</small></li>
<li><a href="/doc/go1.11">Go 1.11</a> <small>(August 2018)</small></li>
<li><a href="/doc/go1.10">Go 1.10</a> <small>(February 2018)</small></li>
