Update CVAT format doc to bypass warning

[sooahleex]

Summary

• Introduce how to bypass warning during converting dataset into cvat format

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have added the description of my changes into CHANGELOG.​
• I have updated the documentation accordingly

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) 2023 Intel Corporation
#
# SPDX-License-Identifier: MIT

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7803691) 79.96% compared to head (51ae681) 79.96%.

Additional details and impacted files

@@               Coverage Diff               @@
##           releases/1.5.0    #1183   +/-   ##
===============================================
  Coverage           79.96%   79.96%           
===============================================
  Files                 265      265           
  Lines               29705    29705           
  Branches             5831     5831           
===============================================
  Hits                23755    23755           
  Misses               4618     4618           
  Partials             1332     1332           

Flag	Coverage Δ
macos-11_Python-3.8	79.09% <ø> (ø)
ubuntu-20.04_Python-3.8	79.96% <ø> (ø)
windows-2022_Python-3.8	79.94% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[vinnamkim]

LGTM.