chore: regens API reference docs (#889)

diff --git a/docs/dyn/libraryagent_v1.shelves.html b/docs/dyn/libraryagent_v1.shelves.html
index 9ea94be..217cc0e 100644
--- a/docs/dyn/libraryagent_v1.shelves.html
+++ b/docs/dyn/libraryagent_v1.shelves.html
@@ -94,7 +94,7 @@
   <pre>Gets a shelf. Returns NOT_FOUND if the shelf does not exist.
 
 Args:
-  name: string, The name of the shelf to retrieve. (required)
+  name: string, Required. The name of the shelf to retrieve. (required)
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format