contrib: correct BUG links in gen_uprev_msg.py

The ID of buganizer issues should be more than or equal to 1e8, not 1e9.

BUG=none
TEST=none

Change-Id: Ie9c418d56b045efb2822e5ee0f1dd4f94f712f72
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2507318
Tested-by: Chen-Tsung Hsieh <chentsung@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Commit-Queue: Yu-Ping Wu <yupingso@chromium.org>
1 file changed