Fix double-tentative in WPT filename
This somehow got two .tentative's. This removes one of them.
Bug: 335223786
Change-Id: I6bf2b7e9577e586f364784fb6554483110fd8096
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5558172
Auto-Submit: Mason Freed masonf@chromium.org
Reviewed-by: David Baron dbaron@chromium.org
Commit-Queue: David Baron dbaron@chromium.org
Cr-Commit-Position: refs/heads/main@{#1304588}