Update external/access/vpn-mobile/vpn-mobile.md, external/access/vpn-mobile/img/img1.png, external/access/vpn-mobile/img/img3.png, external/access/vpn-mobile/img/img2.png, external/access/vpn-mobile/img/img4.png, external/access/vpn-mobile/img/img6.png, external/access/vpn-mobile/img/img5.png, external/access/vpn-mobile/img/img7.png