[mediacapture-main] new commits pushed by aboba

The following commits were just pushed by aboba to https://github.com/w3c/mediacapture-main:

* Fix typo in sink label.

Fix #547

Fix the reported typo in https://www.w3.org/TR/mediacapture-streams/#the-model-sources-sinks-constraints-and-settings
where one of the sinks is incorrectly named 'X' instead of 'Y'. This
commit fixes the typo in the SVG image, so to be consistent with the
rest of the text and the other illustration.
  by Armando Miraglia
https://github.com/w3c/mediacapture-main/commit/fe2289b98db32e03602fed452be299bb4695f0b7

* Merge pull request #593 from armax00/fix547

Fix typo in sink label.
  by Bernard Aboba
https://github.com/w3c/mediacapture-main/commit/012409a9af21bf3806e72723ed6bc2a13dd65aec