fix load attr error. test=develop (#18447)

python/paddle/fluid/layers/io.py

@@ -1286,4 +1286,4 @@ def load(out, file_path, load_as_fp16=None):
     attrs = {"file_path": file_path}
     if load_as_fp16 is not None:
         attrs['load_as_fp16'] = load_as_fp16
-    helper.append_op(type="load", inputs={}, output={"Out": out}, args=attrs)
+    helper.append_op(type="load", inputs={}, output={"Out": out}, attrs=attrs)