Add perkj+magjed to webrtc/media/OWNERS

BUG=webrtc:5420
NOTRY=True

Review URL: https://codereview.webrtc.org/1676963002

Cr-Original-Commit-Position: refs/heads/master@{#11529}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 456801db3bcfb8b8c16cffcd9da05f6ea03f758b
1 file changed