Our index.html page still points to git.buildroot.net as the Git
repository, and to the defunct gmane for the mailing list
activity. Fix these by pointing to Gitlab and lore respectively.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 3e3bcd6338)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>