Fix cross-ref

data-import.qmd

@@ -339,7 +339,7 @@ readr provides a total of nine column types for you to use:
 -   `col_logical()` and `col_double()` read logicals and real numbers. They're relatively rarely needed (except as above), since readr will usually guess them for you.
 -   `col_integer()` reads integers. We distinguish because integers and doubles in this book because they're functionally equivalent, but reading integers explicitly can occasionally be useful because they occupy half the memory of doubles.
 -   `col_character()` reads strings. This is sometimes useful to specify explicitly when you have a column that is a numeric identifier, i.e. long series of digits that identifies some object, but it doesn't make sense to (e.g.) divide it in half.
--   `col_factor()`, `col_date()` and `col_datetime()` create factors, dates and date-time respectively; you'll learn more about those when we get to those data types in @sec-factors and @sec-date-and-times.
+-   `col_factor()`, `col_date()` and `col_datetime()` create factors, dates and date-time respectively; you'll learn more about those when we get to those data types in @sec-factors and @sec-dates-and-times.
 -   `col_number()` is a permissive numeric parser that will ignore non-numeric components, and is particularly useful for currencies. You'll learn more about it in @sec-numbers.
 -   `col_skip()` skips a column so it's not included in the result.