Removed an unwanted space that snuck into appveyor.xml.
Removed an unwanted space that snuck into appveyor.xml.

csantero/Autofac,laizhan/autofac,neoe1984/https-github.com-autofac-Autofac,pagebrooks/Autofac,zjmpds/Autofac,oconics/Autofac,pagebrooks/Autofac,csantero/Autofac,autofac/Autofac,zmaruo/Autofac,liujunhua/Autofac,laizhan/autofac,SeriaWei/Autofac,lijianguang/Autofac,liujunhua/Autofac,neoe1984/https-github.com-autofac-Autofac,SeriaWei/Autofac,laizhan/autofac,LexxFedoroff/Autofac,laizhan/autofac,oconics/Autofac,jruckert/Autofac,jruckert/Autofac,onovotny/Autofac,onovotny/Autofac,LexxFedoroff/Autofac,jango2015/Autofac