Build-Requires: fix comment
Build-Requires: fix comment

Otherwise:
dpkg-checkbuilddeps: warning: can't parse dependency # (gapi-3.0.pc)
dpkg-checkbuilddeps: error: error occurred while parsing Build-Depends/Build-Depends-Arch/Build-Depends-Indep

knocte/gstreamer-sharp-1,knocte/gstreamer-sharp-1,knocte/gstreamer-sharp-1