Fix the formate of raising error in randperm op (#30108)

* fix the formate of raising error in randperm op

paddle/fluid/operators/randperm_op.cc

@@ -31,7 +31,9 @@ class RandpermOp : public framework::OperatorWithKernel {
     int n = ctx->Attrs().Get<int>("n");
     PADDLE_ENFORCE_GT(
         n, 0, platform::errors::InvalidArgument(
-                  "The input(n) of randperm op must be greater than 0."));
+                  "The input 'n' of randperm op should be greater than 0. "
+                  "But received %d.",
+                  n));
 
     ctx->SetOutputDim("Out", framework::make_ddim({n}));
   }