Fix mismatched tag.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137388 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/Atomics.html b/docs/Atomics.html
index fefc171..2b097b3 100644
--- a/docs/Atomics.html
+++ b/docs/Atomics.html
@@ -318,7 +318,7 @@
       the possible optimizations are usually not interesting.</dd>
   <dt>Notes for code generation</dt>
   <dd>This operation has Acquire and Release semantics; see the sections on
-      Acquire and Release.</p>
+      Acquire and Release.</dd>
 </dl>
 
 </div>