Update point-to-site-about.md

Supported versions are TLS 1.2 and TLS 1.3 based on TLS handshake

Author: fabferri

articles/vpn-gateway/point-to-site-about.md

@@ -17,9 +17,9 @@ A Point-to-Site (P2S) VPN gateway connection lets you create a secure connection
 
 Point-to-site VPN can use one of the following protocols:
 
-* **OpenVPN® Protocol**, an SSL/TLS based VPN protocol. A TLS VPN solution can penetrate firewalls, since most firewalls open TCP port 443 outbound, which TLS uses. OpenVPN can be used to connect from Android, iOS (versions 11.0 and above), Windows, Linux, and Mac devices (macOS versions 10.13 and above).
+* **OpenVPN® Protocol**, an SSL/TLS based VPN protocol. A TLS VPN solution can penetrate firewalls, since most firewalls open TCP port 443 outbound, which TLS uses. OpenVPN can be used to connect from Android, iOS (versions 11.0 and above), Windows, Linux, and Mac devices (macOS versions 10.13 and above). 
 
-* **Secure Socket Tunneling Protocol (SSTP)**, a proprietary TLS-based VPN protocol. A TLS VPN solution can penetrate firewalls, since most firewalls open TCP port 443 outbound, which TLS uses. SSTP is only supported on Windows devices. Azure supports all versions of Windows that have SSTP and support TLS 1.2 (Windows 8.1 and later).
+* **Secure Socket Tunneling Protocol (SSTP)**, a proprietary TLS-based VPN protocol. A TLS VPN solution can penetrate firewalls, since most firewalls open TCP port 443 outbound, which TLS uses. SSTP is only supported on Windows devices. Azure supports all versions of Windows that have SSTP and support TLS 1.2 (Windows 8.1 and later). Supported versions are TLS 1.2 and TLS 1.3 based on TLS handshake.
 
 * **IKEv2 VPN**, a standards-based IPsec VPN solution. IKEv2 VPN can be used to connect from Mac devices (macOS versions 10.11 and above).