[docs] Fixed SRTO_RETRANSMITALGO type to int32_t
[docs] Fixed SRTO_RETRANSMITALGO type to int32_t

ethouris/srt,Cinegy/srt,Haivision/srt,Cinegy/srt,ethouris/srt,Haivision/srt,ethouris/srt,Cinegy/srt,Cinegy/srt,ethouris/srt,Haivision/srt,Haivision/srt