chore: update docs/dyn , add static discovery files to discovery_cache/documents (#1111)

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Source-Link: https://github.com/googleapis/synthtool/commit/c2de32114ec484aa708d32012d1fa8d75232daf5
diff --git a/docs/dyn/books_v1.notification.html b/docs/dyn/books_v1.notification.html
index 1615138..6301b67 100644
--- a/docs/dyn/books_v1.notification.html
+++ b/docs/dyn/books_v1.notification.html
@@ -103,24 +103,24 @@
   An object of the form:
 
     {
-    "targetUrl": "A String",
-    "reason": "A String",
-    "doc_id": "A String",
-    "body": "A String",
-    "is_document_mature": True or False,
-    "timeToExpireMs": "A String",
+    "pcampaign_id": "A String",
     "crmExperimentIds": [ # The list of crm experiment ids.
       "A String",
     ],
-    "notificationGroup": "A String",
-    "pcampaign_id": "A String",
-    "kind": "A String", # Resource type.
+    "timeToExpireMs": "A String",
     "show_notification_settings_action": True or False,
-    "title": "A String",
-    "notification_type": "A String",
-    "doc_type": "A String",
-    "iconUrl": "A String",
+    "targetUrl": "A String",
+    "notificationGroup": "A String",
+    "doc_id": "A String",
     "dont_show_notification": True or False,
+    "is_document_mature": True or False,
+    "notification_type": "A String",
+    "reason": "A String",
+    "title": "A String",
+    "iconUrl": "A String",
+    "body": "A String",
+    "doc_type": "A String",
+    "kind": "A String", # Resource type.
   }</pre>
 </div>