Fix broken links to the Itanium CXX ABI

llvm-svn: 312985
diff --git a/llvm/docs/CompilerWriterInfo.rst b/llvm/docs/CompilerWriterInfo.rst
index 24375fb..60f1024 100644
--- a/llvm/docs/CompilerWriterInfo.rst
+++ b/llvm/docs/CompilerWriterInfo.rst
@@ -119,7 +119,7 @@
 ===
 
 * `System V Application Binary Interface <http://www.sco.com/developers/gabi/latest/contents.html>`_
-* `Itanium C++ ABI <http://mentorembedded.github.io/cxx-abi/>`_
+* `Itanium C++ ABI <http://itanium-cxx-abi.github.io/cxx-abi/>`_
 
 Linux
 -----