docs: recursive into sub-directories on 'make upload'
docs: recursive into sub-directories on 'make upload'

surround-io/gst-rtsp-server,barisdemiray/gst-rtsp-server,Lachann/gst-rtsp-server,thaytan/gst-rtsp-server,barisdemiray/gst-rtsp-server,Lachann/gst-rtsp-server,thaytan/gst-rtsp-server,hsteinhaus/gst-rtsp-server,hsteinhaus/gst-rtsp-server,surround-io/gst-rtsp-server,hsteinhaus/gst-rtsp-server,thaytan/gst-rtsp-server,Lachann/gst-rtsp-server,surround-io/gst-rtsp-server,barisdemiray/gst-rtsp-server