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

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diff --git a/docs/dyn/cloudbilling_v1.billingAccounts.projects.html b/docs/dyn/cloudbilling_v1.billingAccounts.projects.html
index 62e1dc7..cbfddc9 100644
--- a/docs/dyn/cloudbilling_v1.billingAccounts.projects.html
+++ b/docs/dyn/cloudbilling_v1.billingAccounts.projects.html
@@ -109,10 +109,10 @@
     "nextPageToken": "A String", # A token to retrieve the next page of results. To retrieve the next page, call `ListProjectBillingInfo` again with the `page_token` field set to this value. This field is empty if there are no more results to retrieve.
     "projectBillingInfo": [ # A list of `ProjectBillingInfo` resources representing the projects associated with the billing account.
       { # Encapsulation of billing information for a Google Cloud Console project. A project has at most one associated billing account at a time (but a billing account can be assigned to multiple projects).
+        "billingAccountName": "A String", # The resource name of the billing account associated with the project, if any. For example, `billingAccounts/012345-567890-ABCDEF`.
         "name": "A String", # The resource name for the `ProjectBillingInfo`; has the form `projects/{project_id}/billingInfo`. For example, the resource name for the billing information for project `tokyo-rain-123` would be `projects/tokyo-rain-123/billingInfo`. This field is read-only.
         "projectId": "A String", # The ID of the project that this `ProjectBillingInfo` represents, such as `tokyo-rain-123`. This is a convenience field so that you don't need to parse the `name` field to obtain a project ID. This field is read-only.
         "billingEnabled": True or False, # True if the project is associated with an open billing account, to which usage on the project is charged. False if the project is associated with a closed billing account, or no billing account at all, and therefore cannot use paid services. This field is read-only.
-        "billingAccountName": "A String", # The resource name of the billing account associated with the project, if any. For example, `billingAccounts/012345-567890-ABCDEF`.
       },
     ],
   }</pre>