Fix codeowners

[WilliamLewww]

🦟 Bug fix

Summary

Also made the same mistake as in 'ign-cmake' and 'ign-gui'.

• Fix codeownders gz-cmake#155
• Fix codeowners gz-gui#251

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge

[chapulina]

Keeping the tradition 😄

[codecov]

Codecov Report

Merging #613 (ac5a917) into ign-rendering3 (25e51e2) will not change coverage.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           ign-rendering3     #613   +/-   ##
===============================================
  Coverage           80.00%   80.00%           
===============================================
  Files                   1        1           
  Lines                  15       15           
===============================================
  Hits                   12       12           
  Misses                  3        3           

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