Added documentation for get_layout API (#13937)

* Added documentation for get_layout API

* Fixed typo

docs/snippets/ov_layout.cpp

@@ -1,7 +1,8 @@
 // Copyright (C) 2018-2022 Intel Corporation
 // SPDX-License-Identifier: Apache-2.0
 //
-#include <openvino/core/layout.hpp>
+#include "openvino/core/layout.hpp"
+#include "openvino/core/model.hpp"
 
 int main() {
     ov::Layout layout;
@@ -54,5 +55,13 @@ layout = ov::Layout("NCHW");
 std::cout << layout.to_string(); // prints [N,C,H,W]
 //! [ov:layout:dump]
 
+std::shared_ptr<ov::Model> model;
+//! [ov:layout:get_from_model]
+// Get layout for model input
+layout = ov::layout::get_layout(model->input("input_tensor_name"));
+// Get layout for model with single output
+layout = ov::layout::get_layout(model->output());
+//! [ov:layout:get_from_model]
+
     return 0;
 }