[FFmpeg-cvslog] libsvtav1: Fix the documentation to match the actual options

ffmpeg | branch: master | Mark Thompson | Thu Jul 30 22:32:00 2020 +0100| [11a2d05b3fa977ea9437725531a4875b735c977e] | committer: Mark Thompson libsvtav1: Fix the documentation to match the actual options > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=11a2d05b3fa977ea9437725531a48

[FFmpeg-cvslog] libsvtav1: Rename without a _

ffmpeg | branch: master | Mark Thompson | Thu Jul 30 22:31:58 2020 +0100| [30a4bdbc1f4853c1deb2cd551d8c661f7b067503] | committer: Mark Thompson libsvtav1: Rename without a _ The external library is called libsvtav1, so use this name everywhere. > http://git.videolan.org/gitweb.cgi/ffmpeg.git/

[FFmpeg-cvslog] libsvtav1: Use _ rather than - in options

ffmpeg | branch: master | Mark Thompson | Thu Jul 30 22:31:59 2020 +0100| [ad7aa1e8e7e60d3db1264c16c8cd891782ab8887] | committer: Mark Thompson libsvtav1: Use _ rather than - in options > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ad7aa1e8e7e60d3db1264c16c8cd891782ab8887 --- l