printf(3) description of a/A float format

[Ben Longbons <brlongbons@xxxxxxxxx>]

>From the man page: "in the style [-]0xh.hhhhp±; for A conversion"

Missing "d" after the plus/minus sign. Note that the minimum number of
exponent digits is 1, unlike e/E (for which the minimum is 2).

But that "; for A" phrasing is awkward too. Honestly, the C standard
is easier to read here.

-Ben