try to fix the sphinx build some more

llvm-svn: 358156
diff --git a/llvm/docs/tutorial/MyFirstLanguageFrontend/index.rst b/llvm/docs/tutorial/MyFirstLanguageFrontend/index.rst
index dcf9d58..2b589d1 100644
--- a/llvm/docs/tutorial/MyFirstLanguageFrontend/index.rst
+++ b/llvm/docs/tutorial/MyFirstLanguageFrontend/index.rst
@@ -1,3 +1,5 @@
+:orphan:
+
 =============================================
 My First Language Frontend with LLVM Tutorial
 =============================================