Add description to disable credential rotation (#318)

addons/core/translations/resources/en-us.yaml

@@ -318,6 +318,9 @@ storage-bucket:
     worker_filter:
       label: Worker filter
       help: Filter for Boundary workers that have network access to your storage. Boolean expression.
+    disable_credential_rotation:
+      label: Disable credential rotation
+      help: Disabling credential rotation could allow entities outside of Boundary to know the client secret in use.
   questions:
     delete-storage-bucket:
       title: Delete associated recordings?

ui/admin/app/components/form/storage-bucket/index.hbs

@@ -308,7 +308,15 @@
     {{on 'change' this.toggleDisableCredentialRotation}}
     as |F|
   >
-    <F.Label>{{t 'form.disable_credential_rotation.label'}}</F.Label>
+    <F.Label>{{t
+        'resources.storage-bucket.form.disable_credential_rotation.label'
+      }}</F.Label>
+    <F.HelperText>
+      {{t 'resources.storage-bucket.form.disable_credential_rotation.help'}}
+      <Hds::Link::Inline @href={{doc-url 'storage-bucket'}}>
+        {{t 'actions.learn-more'}}
+      </Hds::Link::Inline>
+    </F.HelperText>
   </Hds::Form::Checkbox::Field>
 
   {{#if (can 'save model' @model)}}