[clang-tidy] address concerns with rL277340
[clang-tidy] address concerns with rL277340

alexfh raised a concern with https://reviews.llvm.org/rL277340

After retabbing indentation of .. code-block:: was increased to 8, 4 spaces
indentation should be enough.

Reviewers: alexfh



git-svn-id: a34e9779ed74578ad5922b3306b3d80a0c825546@277577 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang-tools-extra,llvm-mirror/clang-tools-extra,llvm-mirror/clang-tools-extra,llvm-mirror/clang-tools-extra