Fix a typo spotted by Jonathan Sauer.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140708 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 21c79e0..74d3b7c 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -1213,7 +1213,7 @@
     //@}
 
     /// \name Netburst
-    /// Netburt microarchitecture based processors.
+    /// Netburst microarchitecture based processors.
     //@{
     CK_Pentium4,
     CK_Pentium4M,