Fixed docstring typos
Fixed docstring typos

Couple of docstring typos in get_value/set_value
Plexxi/st2,tonybaloney/st2,nzlosh/st2,StackStorm/st2,nzlosh/st2,StackStorm/st2,StackStorm/st2,Plexxi/st2,StackStorm/st2,tonybaloney/st2,Plexxi/st2,nzlosh/st2,Plexxi/st2,nzlosh/st2,tonybaloney/st2