Fix a few spellos in docs.

(Trying to debug an incremental build thing on a bot...)

llvm-svn: 371860
diff --git a/llvm/docs/tutorial/MyFirstLanguageFrontend/LangImpl07.rst b/llvm/docs/tutorial/MyFirstLanguageFrontend/LangImpl07.rst
index 218e441..31e2ffb 100644
--- a/llvm/docs/tutorial/MyFirstLanguageFrontend/LangImpl07.rst
+++ b/llvm/docs/tutorial/MyFirstLanguageFrontend/LangImpl07.rst
@@ -520,7 +520,7 @@
 
 This is a trivial case for mem2reg, since there are no redefinitions of
 the variable. The point of showing this is to calm your tension about
-inserting such blatent inefficiencies :).
+inserting such blatant inefficiencies :).
 
 After the rest of the optimizers run, we get: