message: [OpenMP] Fix broken link to browse sources
diff: <a href="http://lists.llvm.org/mailman/listinfo/openmp-dev">openmp-dev</a>
  <a href="http://lists.llvm.org/mailman/listinfo/openmp-commits">openmp-commits</a>
  <a href="http://llvm.org/bugs/">Bug Reports</a>
  - <a href="https://github.com/llvm/llvm-project/openmp">Browse Sources</a>
  + <a href="https://github.com/llvm/llvm-project/tree/master/openmp">Browse Sources</a>
  </div>
  </div>
  