Update whatsprot.class.php

Error :
Parse error: syntax error, unexpected ';', expecting ')' in /home/******/public_html/WhatsAPI-Official-master/src/whatsprot.class.php on line 1250

There were two additional (;) in line 1250 and 1273
they must be :
"to" => $this->getJID($gId)
not :
"to" => $this->getJID($gId);

This is my first participate in this API, hope my name will be thanked nearly @mgp25  hhahahhaha