Update xml_serializing.md

[Nokhrin]

• removed excess initialization

📒 Description

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Resolves #xxxx

🔗 What I've Done

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💬 Comments

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🛫 Checklist

• Updated docs
• Added unit-tests
• Sample tests pass
• W3C tests pass

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.94%. Comparing base (d2d1785) to head (f20c67c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1175   +/-   ##
=======================================
  Coverage   99.94%   99.94%           
=======================================
  Files         116      116           
  Lines        9371     9371           
  Branches     1429     1429           
=======================================
  Hits         9366     9366           
  Misses          5        5           

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