Update docs for 1.3.2 release.
diff --git a/docs/dyn/books_v1.promooffer.html b/docs/dyn/books_v1.promooffer.html
index c185b2e..ab87e18 100644
--- a/docs/dyn/books_v1.promooffer.html
+++ b/docs/dyn/books_v1.promooffer.html
@@ -133,6 +133,7 @@
     {
     "items": [ # A list of offers.
       {
+        "gservicesKey": "A String",
         "items": [
           {
             "description": "A String",