Improve docstrings in test_socket.py
Improve docstrings in test_socket.py

savaki/tchannel,bunnyblue/tchannel,bunnyblue/tchannel,Zirpon/tchannel,benfleis/tchannel,benfleis/tchannel,vanloswang/tchannel,RyanTech/tchannel,hustxiaoc/tchannel,i/tchannel,chenwenbin928/tchannel,sasa233/tchannel,vanloswang/tchannel,savaki/tchannel,bunnyblue/tchannel,sasa233/tchannel,benfleis/tchannel,Zirpon/tchannel,chenwenbin928/tchannel,i/tchannel,vanloswang/tchannel,i/tchannel,hustxiaoc/tchannel,chenwenbin928/tchannel,RyanTech/tchannel,sasa233/tchannel,savaki/tchannel,RyanTech/tchannel,hustxiaoc/tchannel,Zirpon/tchannel