hopefully make it more visible. Adjust the web-docs to have a link to
this file rather than the list itself. I described code owners as also
being gatekeepers for their part of the code, which I think is true but
isn't in the code owner explanation on the web page.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160776 91177308-0d34-0410-b5e6-96231b3b80d8
