Consistent plotting style

src/torchmetrics/utilities/plot.py

@@ -315,7 +315,7 @@ def plot_curve(
         for i, (x_, y_) in enumerate(zip(x, y)):
             label = f"{legend_name}_{i}" if legend_name is not None else str(i)
             label += f" AUC={score[i].item():0.3f}" if score is not None else ""
-            ax.plot(x_.detach().cpu(), y_.detach().cpu(), label=label)
+            ax.plot(x_.detach().cpu(), y_.detach().cpu(), linestyle="-", linewidth=2, label=label)
             ax.legend()
     else:
         raise ValueError(