[cxxmodules] Fix typo, we want to suppress diag not enable it.
[cxxmodules] Fix typo, we want to suppress diag not enable it.

root-mirror/root,karies/root,olifre/root,root-mirror/root,olifre/root,root-mirror/root,olifre/root,karies/root,olifre/root,karies/root,root-mirror/root,karies/root,karies/root,root-mirror/root,root-mirror/root,olifre/root,olifre/root,root-mirror/root,karies/root,olifre/root,olifre/root,root-mirror/root,root-mirror/root,karies/root,karies/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,olifre/root,karies/root,karies/root,olifre/root