Update a few items in User Guide

[TOsmanov]

This PR contains updates items "Creating an annotation task", "Automatic annotation" and "Menu button".
Also updated image005, image007_detrac, image051, image123, image124, image125, image126 and image133.
The update plan is described in #2216 .

Motivation and context

Fixes issue #2213

How has this been tested?

N/A

Checklist

• I submit my changes into the develop branch
• I have added description of my changes into CHANGELOG file
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues (read github docs)
• I have increased versions of npm packages if it is necessary (cvat-canvas,
  cvat-core, cvat-data and cvat-ui)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below)

# Copyright (C) 2020 Intel Corporation
#
# SPDX-License-Identifier: MIT

[coveralls]

Coverage remained the same at 65.311% when pulling 7567122 on TOsmanov:UG-update-item-Automatic-annotation into b215f04 on openvinotoolkit:develop.