Add "V83" to Yealink T38G (2) download label
Yealink firmware V83 changed to use paths similar to the existing "T38G (2)" export option.
That option has been confirmed to work on V83, so add that to the download label to make it easier for users to choose the correct format.
#4 Updated by James Dekker 6 months ago
On 2.4.5.a.20190102.0951 with pfSense-pkg-openvpn-client-export-1.4.18, seeing
-Yealink SIP Handsets: T28 T38G (1) T38G (2)/V83 - SNOM SIP Handset
-Yealink SIP Handsets: T28 T38G (1) T38G (2)/V83 -Snom SIP Handsets: SNOM
as shown in the previous post (https://github.com/pfsense/FreeBSD-ports/pull/605)