fix a few spelling errors and typos

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67758 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/SubtargetEmitter.cpp b/utils/TableGen/SubtargetEmitter.cpp
index b05b996..cb36a76 100644
--- a/utils/TableGen/SubtargetEmitter.cpp
+++ b/utils/TableGen/SubtargetEmitter.cpp
@@ -78,7 +78,7 @@
     
     if (CommandLineName.empty()) continue;
     
-    // Emit as { "feature", "decription", feactureEnum, i1 | i2 | ... | in }
+    // Emit as { "feature", "description", featureEnum, i1 | i2 | ... | in }
     OS << "  { "
        << "\"" << CommandLineName << "\", "
        << "\"" << Desc << "\", "