Document how to skip the code owner config validation with CherryPick API

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I04f9e456bcd060c96c8e6c84d1317f09f1a7f8a7

resources/Documentation/validation.md

diff --git a/resources/Documentation/validation.md b/resources/Documentation/validation.md
index d7a5548..be2c40d 100644
--- a/resources/Documentation/validation.md
+++ b/resources/Documentation/validation.md
@@ -107,6 +107,13 @@
 the [ChangeInput](../../../Documentation/rest-api-changes.html#change-input)
 (see field `validation_options`).
 
+Similarly, for the [Cherry Pick
+Revision](../../../Documentation/rest-api-changes.html#cherry-pick) REST endpoint
+skipping the code owner config validation is possible by setting
+`code-owners~skip-validation` with the value `true` as a validation option in
+the [CherryPickInput](../../../Documentation/rest-api-changes.html#cherrypick-input)
+(see field `validation_options`).
+
 Using the push option or the validation option requires the calling user to
 have the `Can Skip Code Owner Config Validation` global capability. Host
 administrators have this capability implicitly assigned via the `Administrate