utils: fix docs
utils: fix docs

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