docs: update buffer2 draft
docs: update buffer2 draft

ensonic/gstreamer,justinjoy/gstreamer,Lachann/gstreamer,magcius/gstreamer,lovebug356/gstreamer,cablelabs/gstreamer,jpakkane/gstreamer,mparis/gstreamer,lubosz/gstreamer,shelsonjava/gstreamer,Lachann/gstreamer,ensonic/gstreamer,Distrotech/gstreamer,surround-io/gstreamer,centricular/gstreamer,drothlis/gstreamer,jpakkane/gstreamer,lubosz/gstreamer,Lachann/gstreamer,cfoch/gstreamer,ensonic/gstreamer,ahmedammar/platform_external_gst_gstreamer,krieger-od/gstreamer,krieger-od/gstreamer,Distrotech/gstreamer,magcius/gstreamer,drothlis/gstreamer,jpxiong/gstreamer,Lachann/gstreamer,cablelabs/gstreamer,cfoch/gstreamer,StreamUtils/gstreamer,drothlis/gstreamer,lovebug356/gstreamer,cfoch/gstreamer,ylatuya/gstreamer,mrchapp/gstreamer,centricular/gstreamer,surround-io/gstreamer,shelsonjava/gstreamer,Distrotech/gstreamer,krichter722/gstreamer,centricular/gstreamer,justinjoy/gstreamer,collects/gstreamer,lovebug356/gstreamer,justinjoy/gstreamer,lubosz/gstreamer,StreamUtils/gstreamer,ahmedammar/platform_external_gst_gstreamer,mparis/gstreamer,mparis/gstreamer,jpakkane/gstreamer,ahmedammar/platform_external_gst_gstreamer,shelsonjava/gstreamer,ylatuya/gstreamer,StreamUtils/gstreamer,krieger-od/gstreamer,surround-io/gstreamer,drothlis/gstreamer,lovebug356/gstreamer,drothlis/gstreamer,krichter722/gstreamer,surround-io/gstreamer,ahmedammar/platform_external_gst_gstreamer,jpakkane/gstreamer,cablelabs/gstreamer,krichter722/gstreamer,shelsonjava/gstreamer,ensonic/gstreamer,centricular/gstreamer,magcius/gstreamer,collects/gstreamer,ensonic/gstreamer,cfoch/gstreamer,centricular/gstreamer,Distrotech/gstreamer,krieger-od/gstreamer,ylatuya/gstreamer,cablelabs/gstreamer,shelsonjava/gstreamer,cablelabs/gstreamer,mrchapp/gstreamer,Lachann/gstreamer,cfoch/gstreamer,krichter722/gstreamer,justinjoy/gstreamer,jpakkane/gstreamer,justinjoy/gstreamer,jpxiong/gstreamer,mrchapp/gstreamer,collects/gstreamer,lubosz/gstreamer,collects/gstreamer,mrchapp/gstreamer,ylatuya/gstreamer,jpxiong/gstreamer,magcius/gstreamer,collects/gstreamer,mparis/gstreamer,lubosz/gstreamer,ahmedammar/platform_external_gst_gstreamer,magcius/gstreamer,StreamUtils/gstreamer,krieger-od/gstreamer,jpxiong/gstreamer,mparis/gstreamer,lovebug356/gstreamer,Distrotech/gstreamer,krichter722/gstreamer,jpxiong/gstreamer,surround-io/gstreamer,mrchapp/gstreamer,StreamUtils/gstreamer,ylatuya/gstreamer