Update index.md

Updating list of helpers

index.md

@@ -14,7 +14,7 @@ humantime: 9:00 am - ca. 3:00 pm CET    # human-readable times for the workshop
 startdate: 2024-11-28      # machine-readable start date for the workshop in YYYY-MM-DD format like 2015-01-01
 enddate: 2024-11-28         # machine-readable end date for the workshop in YYYY-MM-DD format like 2015-01-02
 instructor: ["Désirée Treichler", "Federico Bianchini"] # boxed, comma-separated list of instructors' names as strings, like ["Kay McNulty", "Betty Jennings", "Betty Snyder"]
-helper: ["Gisela Attinger", "Veerle van Winden"]     # boxed, comma-separated list of helpers' names, like ["Marlyn Wescoff", "Fran Bilas", "Ruth Lichterman"]
+helper: ["Gisela Attinger", "Nicholas David Yardley Ball"]     # boxed, comma-separated list of helpers' names, like ["Marlyn Wescoff", "Fran Bilas", "Ruth Lichterman"]
 email: ["[email protected]"]    # boxed, comma-separated list of contact email addresses for the host, lead instructor, or whoever else is handling questions, like ["[email protected]", "[email protected]", "[email protected]"]
 collaborative_notes:  # optional: URL for the workshop collaborative notes, e.g. an Etherpad or Google Docs document (e.g., https://pad.carpentries.org/2015-01-01-euphoria)
 eventbrite:           # optional: alphanumeric key for Eventbrite registration, e.g., "1234567890AB" (if Eventbrite is being used)