Update 2.16.1 release notes

Change-Id: Ic484217ca5fd68c0f127ecfb2ed64f24b23e1128
diff --git a/pages/site/releases/2.16.md b/pages/site/releases/2.16.md
index 329c198..d2cc3ff 100644
--- a/pages/site/releases/2.16.md
+++ b/pages/site/releases/2.16.md
@@ -487,6 +487,12 @@
 * [Issue 10021](https://bugs.chromium.org/p/gerrit/issues/detail?id=10021):
 Quote and encode project names in download commands.
 
+* Fix internal server error when listing reviewers of a change with reviewers by email.
+
+  Reviewers by email don't have an account ID but formatting reviewers as
+  JSON tried to get account IDs of all reviewers. This failed when the
+  change had any reviewers by email.
+
 * Use dynamic binding for `UrlFormatter`.
 
   The `UrlFormatter` interface had a fixed binding to its default
@@ -496,3 +502,7 @@
 * Don't serve Polygerrit UI when running in headless mode.
 
 * Don't serve static resources when running in slave mode.
+
+* Fix assignee's status on the change screen.
+
+  The assignee field's status showed the change owner's status text.