It reads
Optionally, a named list providing a function that will be applied to the value in each cell in the output. You will typically use this when the combination of id_cols and value column does not uniquely identify an observation.
I believe it should be
Optionally, a named list providing a function that will be applied to the value in each cell in the output. You will typically use this when the combination of id_cols and name column does not uniquely identify an observation.
Am I right?