updateHostsWindows.bat: minor consistency changes
updateHostsWindows.bat: minor consistency changes

* fix a few typos
* fix indentation
* lowercase commands since on Windows case doesn't matter
* add `/y /v` flags in copy commands
* remove unneeded `pushd` command since we `cd` after that anyway
* add `wscript.exe` when calling the .vbs script

gfyoung/hosts,borisschapira/hosts,StevenBlack/hosts,StevenBlack/hosts,gfyoung/hosts