Fix a typo in the msvc config
Fix a typo in the msvc config

rust-lang/rust-buildbot,rust-lang-deprecated/rust-buildbot,rust-lang/rust-buildbot,rust-lang/rust-buildbot,aidanhs/rust-buildbot,rust-lang-deprecated/rust-buildbot,edunham/rust-buildbot,edunham/rust-buildbot,rust-lang-deprecated/rust-buildbot,aidanhs/rust-buildbot,edunham/rust-buildbot,aidanhs/rust-buildbot