fix typo to pass the ci

test=develop

Author: luotao1

paddle/fluid/framework/ir/fc_fuse_pass_tester.cc

@@ -29,6 +29,7 @@ void SetOp(ProgramDesc* prog, const std::string& type,
   if (type == "mul") {
     op->SetInput("X", {inputs[0]});
     op->SetInput("Y", {inputs[1]});
+    op->SetAttr("x_num_col_dims", {1});
   } else if (type == "elementwise_add") {
     op->SetInput("X", inputs);
   }

paddle/fluid/operators/fc_op.cc

@@ -121,7 +121,7 @@ void FCOpMaker::Make() {
   AddInput("W", "(Tensor), The weight fc op with shape (I, O).");
   AddInput("Bias", "(Tensor, optional) Bias vector with shape (1 x O")
       .AsDispensable();
-  AddAttr<int>("x_num_col_dims",
+  AddAttr<int>("in_num_col_dims",
                "(int, default 1), The fc op can take tensors with more than "
                "two dimensions as its inputs.")
       .SetDefault(1)