RFR: 8288450: Update attribution in gstreamer.md file [v3]

[Andy Goryachev]

On Thu, 21 Jul 2022 21:46:16 GMT, Alexander Matveev <almatvee at openjdk.org> wrote:

>> Doc-only change to update the license attribution in our gstreamer.md and glib.md files.
>
> Alexander Matveev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8288450: Update attribution in gstreamer.md file [v3]

is this information copied directly from the corresponding source projects?
meaning, when copyright section changes in the future it will be a trivial update?

-------------

Marked as reviewed by angorya (Author).

PR: https://git.openjdk.org/jfx/pull/807