No, it's not there, it's on the memo itself, in his own words, in a section literally titled "Non-bias causes of the gender gap in tech" if you'd like a more reliable source than Wikipedia.

>Extraversion expressed as gregariousness rather than assertiveness. Also, higher agreeableness. This leads to women generally having a harder time negotiating salary, asking for raises, speaking up, and leading.

Do you see it? The part where he says women are genetically worse leaders, and have worse salaries because they're genetically worse negotiators? Remember, the section is titled "Possible non-bias causes of the gender gap in tech", implying that women are paid less because it's natural, not because of sexist bias.

At any rate, I appreciate the patronizing "making well meaning but confused leaps of logic" pat in the head.