try to fix the sphinx build some more

llvm-svn: 358156
diff --git a/llvm/docs/tutorial/MyFirstLanguageFrontend/LangImpl06.rst b/llvm/docs/tutorial/MyFirstLanguageFrontend/LangImpl06.rst
index e509788..911a7dc 100644
--- a/llvm/docs/tutorial/MyFirstLanguageFrontend/LangImpl06.rst
+++ b/llvm/docs/tutorial/MyFirstLanguageFrontend/LangImpl06.rst
@@ -1,3 +1,5 @@
+:orphan:
+
 ============================================================
 Kaleidoscope: Extending the Language: User-defined Operators
 ============================================================