Updating the same comment in a different file, again for links. No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185014 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Analysis/Analyses/ThreadSafety.h

@@ -11,8 +11,8 @@
 // A intra-procedural analysis for thread safety (e.g. deadlocks and race
 // conditions), based off of an annotation system.
 //
-// See http://clang.llvm.org/docs/LanguageExtensions.html#threadsafety for more
-// information.
+// See http://clang.llvm.org/docs/LanguageExtensions.html#thread-safety-annotation-checking
+// for more information.
 //
 //===----------------------------------------------------------------------===//