Hello @chchao and welcome to the SAS Support Communities!
Everything is correct here (as usual). The keyword is "Folded F" -- which means that a factor 2 comes into play in order to perform a two-tailed test. The formula can be found in section "Two-Independent-Sample Design" of the PROC TTEST documentation. To reproduce the p-value (0.0639) with SAS functions you can use PROBF or CDF¹: p=2*(1-probf(230/63, 7, 10))=2*(1-cdf('F', 230/63, 7, 10)). (230/63 is the exact F value 3.65079...)
¹ Addendum: ... or SDF: 2*(sdf('F', 230/63, 7, 10))