common: update for python detection
common: update for python detection

Fixes docs build.

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