Mention the REST endpoint to set config parameters in the config FAQs

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I605475bf1c7826e9eb888f2c5973d16f058a1ca5

resources/Documentation/config-faqs.md

diff --git a/resources/Documentation/config-faqs.md b/resources/Documentation/config-faqs.md
index 3ac6230..73b3cc3 100644
--- a/resources/Documentation/config-faqs.md
+++ b/resources/Documentation/config-faqs.md
@@ -25,6 +25,9 @@
 * push the newly created commit back to the `refs/meta/config` branch (e.g. `git
   push origin HEAD:refs/meta/config`)
 
+Some of the configuration parameters can also be set via the [Update Code Owner
+Project Config REST endpoint](rest-api.html#update-code-owner-project-config).
+
 ## <a id="checkIfEnabled">How to check if the code owners functionality is enabled for a project or branch
 
 To check if the code owners functionality is enabled for a single branch, use