Change </pp> to </p>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65804 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index bee81e9..fda5225 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -86,7 +86,7 @@
 code, the LLVM Project includes other sub-projects that are in development.  The
 two which are the most actively developed are the <a href="#clang">Clang
 Project</a> and the <a href="#vmkit">VMKit Project</a>.
-</pp>
+</p>
 
 </div>