Thread safety: Fix typo in documentation

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136370 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LanguageExtensions.html b/docs/LanguageExtensions.html
index 877217f..37ea039 100644
--- a/docs/LanguageExtensions.html
+++ b/docs/LanguageExtensions.html
@@ -1098,7 +1098,7 @@
 
 
 <!-- ======================================================================= -->
-<h2 id="analyzerspecific">Thread-Safety Annotation Checking</h2>
+<h2 id="threadsafety">Thread-Safety Annotation Checking</h2>
 <!-- ======================================================================= -->
 
 <p>Clang supports additional attributes for checking basic locking policies in