Update 2.16.8 release notes

Change-Id: Id4c1adcc0c6795341a934e7ca350a0afe45881de
diff --git a/pages/site/releases/2.16.md b/pages/site/releases/2.16.md
index 5e41c1c..9087342 100644
--- a/pages/site/releases/2.16.md
+++ b/pages/site/releases/2.16.md
@@ -435,7 +435,7 @@
 
 * Update guice-* to 4.2.1
 
-* Update JGit to 5.1.3.201810200350-r (Updated to 5.1.6.201903130242-r in 2.16.7)
+* Update JGit to 5.1.3.201810200350-r (Updated to 5.1.7.201904200442-r in 2.16.8)
 
 * Update Lucene to 6.6.5
 
@@ -549,8 +549,15 @@
   Additionally, the documentation is updated to clarify that the hour
   value in times must be zero-padded.
 
+* Install `AddKeyHtml.soy` template example during installation.
+
+  The installation of this template into `$site_path/etc/mail` was
+  omitted.
+
 * Upgrade Flogger to version 0.4.
 
+* Upgrade metrics-core to 4.0.5.
+
 * Upgrade protobuf-java to 3.7.1.
 
 * PolyGerrit fixes: