Fix some doc and comment typos

llvm-svn: 205899
diff --git a/llvm/lib/IR/Use.cpp b/llvm/lib/IR/Use.cpp
index e40f3e9..047861c 100644
--- a/llvm/lib/IR/Use.cpp
+++ b/llvm/lib/IR/Use.cpp
@@ -49,7 +49,7 @@
   return this - getUser()->op_begin();
 }
 
-// Sets up the waymarking algoritm's tags for a series of Uses. See the
+// Sets up the waymarking algorithm's tags for a series of Uses. See the
 // algorithm details here:
 //
 //   http://www.llvm.org/docs/ProgrammersManual.html#UserLayout