Fix misplaced README.txt.gz.
Fix misplaced README.txt.gz.

Thanks: Sven Joachim <970fe2f4890dbae44295431294bd7ae16de8f620@gmx.de> for the patch.
Closes: #713834

rbrito/pkg-youtube-dl,rbrito/pkg-youtube-dl,marado/youtube-dl,marado/youtube-dl