improve docs a little
improve docs a little

ensonic/gstreamer,cfoch/gstreamer,ensonic/gstreamer,collects/gstreamer,cfoch/gstreamer,StreamUtils/gstreamer,jpakkane/gstreamer,surround-io/gstreamer,justinjoy/gstreamer,justinjoy/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,mparis/gstreamer,Lachann/gstreamer,jpxiong/gstreamer,krieger-od/gstreamer,shelsonjava/gstreamer,jpxiong/gstreamer,krichter722/gstreamer,lubosz/gstreamer,surround-io/gstreamer,lovebug356/gstreamer,justinjoy/gstreamer,centricular/gstreamer,krieger-od/gstreamer,lubosz/gstreamer,cablelabs/gstreamer,StreamUtils/gstreamer,Lachann/gstreamer,krichter722/gstreamer,collects/gstreamer,mparis/gstreamer,collects/gstreamer,justinjoy/gstreamer,cablelabs/gstreamer,mparis/gstreamer,StreamUtils/gstreamer,centricular/gstreamer,jpxiong/gstreamer,ensonic/gstreamer,centricular/gstreamer,jpakkane/gstreamer,lubosz/gstreamer,shelsonjava/gstreamer,krieger-od/gstreamer,lovebug356/gstreamer,lovebug356/gstreamer,surround-io/gstreamer,krichter722/gstreamer,jpxiong/gstreamer,lovebug356/gstreamer,cablelabs/gstreamer,krichter722/gstreamer,centricular/gstreamer,jpxiong/gstreamer,mparis/gstreamer,cfoch/gstreamer,StreamUtils/gstreamer,shelsonjava/gstreamer,Lachann/gstreamer,jpakkane/gstreamer,mparis/gstreamer,Lachann/gstreamer,shelsonjava/gstreamer,cablelabs/gstreamer,StreamUtils/gstreamer,justinjoy/gstreamer,krieger-od/gstreamer,ensonic/gstreamer,ensonic/gstreamer,Lachann/gstreamer,jpakkane/gstreamer,centricular/gstreamer,lubosz/gstreamer,jpakkane/gstreamer,cfoch/gstreamer,cablelabs/gstreamer,lubosz/gstreamer,krichter722/gstreamer,krieger-od/gstreamer,collects/gstreamer,surround-io/gstreamer,surround-io/gstreamer,collects/gstreamer,lovebug356/gstreamer