message: Fix missing line break in Database 'extra' instructions
diff: @@ -139,7 +139,7 @@ class DatabaseMixin:
  'Specify it as **"schemas_allowed_for_csv_upload": '
  '["public", "csv_upload"]**. '
  "If database flavor does not support schema or any schema is allowed "
  - "to be accessed, just leave the list empty"
  + "to be accessed, just leave the list empty<br/>"
  "4. the ``version`` field is a string specifying the this db's version. "
  "This should be used with Presto DBs so that the syntax is correct",
  True,
  