Update concat to append

Signed-off-by: Lim, Kuan Xian <[email protected]>

Author: kuanxian1

keras/src/backend/openvino/numpy.py

@@ -192,7 +192,7 @@ def amin(x, axis=None, keepdims=False):
 
 def append(x1, x2, axis=None):
     x1, x2 = get_ov_output(x1), get_ov_output(x2)
-    x1, x2 = _align_operand_types(x1, x2, "concat()")
+    x1, x2 = _align_operand_types(x1, x2, "append()")
     if axis is None:
         flatten_shape = ov_opset.constant([-1], Type.i32).output(0)
         x1 = ov_opset.reshape(x1, flatten_shape, False).output(0)