NaiveDate::years_since wrong documentation

[Taxalo]

The documentation on the NaiveDate::years_since says it Returns None if base < self.. But this is not correct. It is actually Returns None if base > self.. As the implementation is:

pub const fn years_since(&self, base: Self) -> Option<u32> {
        let mut years = self.year() - base.year(); 
        // Comparing tuples is not (yet) possible in const context. Instead we combine month and
        // day into one `u32` for easy comparison.
        if (self.month() << 5 | self.day()) < (base.month() << 5 | base.day()) {
            years -= 1;
        }

        match years >= 0 {
            true => Some(years as u32),
            false => None,
        }
    }

Base must be bigger than self to return None, take the example of 2022-01-01 and 1998-01-01. If base was 2022 and 1998 self it will be 1998 - 2022 < 0. Which will return None from being negative.