Improve auto-population of Web link at top of `agenda.md`

[stefaniebutland]

When I make an agenda (code below), I would like the link for "Web" in agenda.md output (example below) to be the URL in the OpenscapesChampionsCohortRegistry sheet cohort_website field: Web: https://nmfs-openscapes.github.io/2025-nmfs-champions. Currently, the code appears to construct the Web link from the cohort_name field.

code

  registry_url = "https://docs.google.com/spreadsheets/d/1Ys9KiTXXmZ_laBoCV2QWEm7AcnGSVQaXvm2xpi4XTSc/edit#gid=942365997",
  cohort_id = "2025-nmfs-champions-a",
  call_number = 2)

output in agenda.md

Openscapes Champions Cohort Series [ 2025-nmfs-champions-a ]
Links: [Cohort Google Drive folder] (link), Zoom: link
Web: https://openscapes.github.io/2025-nmfs-champions-a