Add link to the 'Ops/User Docs Review Inbox' to local-files.html

The corresponding dashboard file is available in the
gerrit-dash-creator (https://github.com/stackforge/gerrit-dash-creator/)
repository.

Change-Id: Ied3295f45d9feb743ae4a077a4276175ceb9816c
Merge "Add link to the 'Ops/User Docs Review Inbox' to local-files.html"