fixup! [mlir] Use new VectorType wrappers CommonTypeConstraints.td

Add missing empty line

Author: banach-space

mlir/include/mlir/IR/BuiltinTypes.h

@@ -424,6 +424,7 @@ class ScalableVectorType : public VectorType {
 class FixedVectorType : public VectorType {
 public:
   using VectorType::VectorType;
+
   static bool classof(Type type) {
     auto vecTy = llvm::dyn_cast<VectorType>(type);
     if (!vecTy)