[cmt] Fix mgid extraction (closes #10813)

The example in #10813 requires TV provider authentication in Firefox,
while youtube-dl can download it directly with an US proxy.

I'm not sure whether the mgid fix is cmt-specific or it applies to all
mtv-based sites. I keep it in cmt.py until similar patterns are found in
other websites.

1 files changed, 1 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 8cc5b93e6..c1173150d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 version <unreleased>
 
 Extractors
+* [cmt] Fix mgid extraction (#10813)
 * [chirbit] Fix extraction of user profile pages
 * [charambatv] Fix extraction
 * [canalplus] Fix extraction for some videos