Typo in file_size field description

[daniel-ji]

Instead of Size of annotation file in bytes, the description (which propagates to the frontend docs and API as well) is Size of annota file in bytes.

      file_size:
        name: file_size
        description: Size of annota file in bytes
        from_schema: cdp-dataset-config
        exact_mappings:
          - api_file_size
        range: float
        unit:
          symbol: B
          descriptive_name: bytes

https://github.com/chanzuckerberg/cryoet-data-portal-backend/blob/main/apiv2/schema/schema.yaml#L866