Missing quotes around text block in CDM definition (CSV file for v5.4) result in incorrect number of items for that row.

PR #766 should fix it. 

Github's web UI also notices the issue apparently. When visiting https://github.com/OHDSI/CommonDataModel/blob/main/inst/csv/OMOP_CDMv5.4_Field_Level.csv, the following banner is shown:
<img width="1295" height="85" alt="Image" src="https://github.com/user-attachments/assets/daf448fb-3a8b-43d7-a99c-bb63abfaee0b" />