2.16: Consolidate request tracing information into a single section

Change-Id: Ieb2a0a54c89ead2e503beb90de4ba837c6ef2783
diff --git a/pages/site/releases/2.16.md b/pages/site/releases/2.16.md
index 11d634c..40123cc 100644
--- a/pages/site/releases/2.16.md
+++ b/pages/site/releases/2.16.md
@@ -337,10 +337,15 @@
 * New endpoint [`/files`](https://gerrit-documentation.storage.googleapis.com/Documentation/2.16/rest-api-projects.html#list-files)
   to list files associated with a commit.
 
-### [Request Tracing](https://gerrit-documentation.storage.googleapis.com/Documentation/2.16/rest-api.html#tracing)
+### Request Tracing
 
-For each REST endpoint tracing can be enabled by setting the `trace=<trace-id>` request parameter.
-Given the trace ID an administrator can find the corresponding logs and investigate issues more easily.
+If a request is traced the unique trace ID is attached to all logs that are triggered
+by the request. In addition all logs are enforced regardless of the configured log level.
+Given the trace ID an administrator can find the trace in the error log and debug issues more
+easily.
+
+Detailed information about request tracing can be found in the
+[request tracing documentation](https://gerrit-documentation.storage.googleapis.com/Documentation/2.16/user-request-tracing.html).
 
 ### New configuration option to ignore self approval on labels
 
@@ -360,15 +365,6 @@
 
 When you upgrade Gerrit using `init -d`, you are given the option to install the `codemirror-editor` plugin.
 
-### Request Tracing
-
-Tracing can now be enabled for single requests. If a request is traced a unique
-trace ID is attached to all logs that are triggered by the request. In addition
-all logs are enforced regardless of the configured log level. Given the trace ID
-an administrator can find the trace in the error log and debug issues more
-easily. Detailed information about request tracing can be found in the
-[request tracing documentation](https://gerrit-documentation.storage.googleapis.com/Documentation/2.16/user-request-tracing.html).
-
 ## Dependency Updates
 
 * Update args4j to 2.33