docs: update design docs for TOC API changes too
docs: update design docs for TOC API changes too

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