docs: update metadata draft
docs: update metadata draft

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