changed error message format (moved newlines for better readability.)

Author: cptspacemanspiff

exir/verification/verifier.py

@@ -192,11 +192,11 @@ def _check_tensor_args_matching_op_allowed_dtype(gm: GraphModule) -> None:
         error_msg = ""
         for op, node in validator.violating_ops.items():
             # error_msg += f"#####################################################\n"
-            error_msg += f"Operator: {op} with args: {node[0]}\n"
-            error_msg += f"stack trace: {node[1].stack_trace}\n\n"
+            error_msg += f"\nOperator: {op} with args: {node[0]}\n"
+            error_msg += f"stack trace: {node[1].stack_trace}\n"
             # error_msg += f"#####################################################\n"
         raise SpecViolationError(
-            f"These operators are taking Tensor inputs with mismatched dtypes:\n{error_msg}\n"
+            f"These operators are taking Tensor inputs with mismatched dtypes:\n{error_msg}"
             "Please make sure the dtypes of the Tensor inputs are the same as the dtypes of the corresponding outputs."
         )