chore: regens API reference docs (#889)

diff --git a/docs/dyn/drive_v2.about.html b/docs/dyn/drive_v2.about.html
index 6890a67..a20d9b2 100644
--- a/docs/dyn/drive_v2.about.html
+++ b/docs/dyn/drive_v2.about.html
@@ -156,7 +156,7 @@
     ],
     "kind": "drive#about", # This is always drive#about.
     "name": "A String", # The name of the current user.
-    "quotaBytesTotal": "A String", # The total number of quota bytes.
+    "quotaBytesTotal": "A String", # The total number of quota bytes. This is only relevant when quotaType is LIMITED.
     "remainingChangeIds": "A String", # The number of remaining change ids, limited to no more than 2500.
     "importFormats": [ # The allowable import formats.
       {