Fix some typos in ART.

Test: m build-art-host
Test: m cpplint-art
Change-Id: Ifc6ce3d0d645c4a8dca72dd483fc03fc05077130
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index a2980dc..f0ea9e2 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -565,7 +565,7 @@
   ArtMethod* GetArtMethod() const { return art_method_; }
   void SetArtMethod(ArtMethod* method) { art_method_ = method; }
 
-  // Returns an instruction with the opposite boolean value from 'cond'.
+  // Returns an instruction with the opposite Boolean value from 'cond'.
   // The instruction has been inserted into the graph, either as a constant, or
   // before cursor.
   HInstruction* InsertOppositeCondition(HInstruction* cond, HInstruction* cursor);