Use a consistent spelling for vtables.

llvm-svn: 259137
diff --git a/clang/lib/CodeGen/MicrosoftCXXABI.cpp b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
index 93210d5..71fc207 100644
--- a/clang/lib/CodeGen/MicrosoftCXXABI.cpp
+++ b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
@@ -1642,7 +1642,7 @@
 
   if (DeferredVFTables.insert(RD).second) {
     // We haven't processed this record type before.
-    // Queue up this v-table for possible deferred emission.
+    // Queue up this vtable for possible deferred emission.
     CGM.addDeferredVTable(RD);
 
 #ifndef NDEBUG