document benchling metadata

Author: drernie

docs/examples/benchling.md

@@ -29,8 +29,15 @@ When scientists create notebook entries in Benchling, this webhook
 automatically:
 
 - **Creates a dedicated Quilt package** for each notebook entry
-- **Synchronizes metadata** from Benchling (experiment IDs, authors, etc.)
-  into that package
+- **Synchronizes metadata** from Benchling into that package, e.g.,
+  - authors (list)
+  - created_at (ISO timestamp)
+  - creator: "First Last <user_id@ent_XXXX>"
+  - display_id: "EXP0000XXXXXX"
+  - entry_id: "etr_XXXXXX"
+  - files (list)
+  - modified_at (ISO timestamp)
+  - web_url
 - **Copies attachments** from that notebook into Amazon S3 as part of the
   package.
 - **Enables organizational data discovery** by making contents available in