libc/time/lib_strftime : Add explanation for the specific cases
I find the missing explanation of %a and %A cases
So I added explanation for the %a and %A cases
@@ -127,6 +127,8 @@ static const char *const g_monthname[12] = {
* ter, and terminated by a conversion specifier character, and are
* replaced in s as follows:
*
+ * %a A three-letter abbreviation for the day of the week.
+ * %A The full name for the day of the week.
* %b The abbreviated month name according to the current locale.
* %B The full month name according to the current locale.
* %C The century number (year/100) as a 2-digit integer. (SU)
