docs(gcs sink): add 401 and 408 under retry policy (#21458)

* docs(gcs sink): add 401 and 408 under retry policy

* refactor(docs): allow retry policy to be overriden

Author: benjamin-awd

website/cue/reference/components/sinks.cue

@@ -635,12 +635,12 @@ components: sinks: [Name=string]: {
 
 				retry_policy: {
 					title: "Retry policy"
-					body: """
+					body: *"""
 						Vector will retry failed requests (status == 429, >= 500, and != 501).
 						Other responses will not be retried. You can control the number of
 						retry attempts and backoff rate with the `request.retry_attempts` and
 						`request.retry_backoff_secs` options.
-						"""
+						""" | string
 				}
 			}
 		}

website/cue/reference/components/sinks/gcp_cloud_storage.cue

@@ -141,6 +141,16 @@ components: sinks: gcp_cloud_storage: {
 				"""
 		}
 
+		retry_policy: {
+			title: "Retry policy"
+			body: """
+				Vector will retry failed requests (status == 401, == 408, == 429, >= 500, and != 501).
+				Other responses will not be retried. You can control the number of
+				retry attempts and backoff rate with the `request.retry_attempts` and
+				`request.retry_backoff_secs` options.
+				"""
+		}
+
 		storage_class: {
 			title: "Storage Class"
 			body:  """