Corrects the command line for wget.
Corrects the command line for wget.

Without this, wget deposits the launcher in the working directory and pipes zero bytes to the  intended location.

sbt/sbt,xuwei-k/xsbt,mdedetrich/sbt,sbt/sbt,sbt/sbt,sbt/sbt,schleichardt/sbt-extras,sbt/sbt,mdedetrich/sbt,sbt/sbt,mdedetrich/sbt,sbt/sbt-launcher-package,mdedetrich/sbt,mdedetrich/sbt,xuwei-k/xsbt,mdedetrich/sbt,sbt/sbt,BanzaiMan/sbt-extras,mdedetrich/sbt,xuwei-k/xsbt,xuwei-k/xsbt,yeghishe/sbt-extras,sbt/sbt-launcher-package,xuwei-k/xsbt