update the tutorial to use CreateFAdd to create fp operations.

llvm-svn: 112733
diff --git a/llvm/docs/tutorial/LangImpl6.html b/llvm/docs/tutorial/LangImpl6.html
index 9a05fbf..97505f7 100644
--- a/llvm/docs/tutorial/LangImpl6.html
+++ b/llvm/docs/tutorial/LangImpl6.html
@@ -1540,7 +1540,7 @@
     StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
   }
   
-  Value *NextVar = Builder.CreateAdd(Variable, StepVal, "nextvar");
+  Value *NextVar = Builder.CreateFAdd(Variable, StepVal, "nextvar");
 
   // Compute the end condition.
   Value *EndCond = End->Codegen();