Remove a few extra zeros from some sdf files

[nkoenig]

🦟 Bug fix

Summary

Just removing a few extra zeros from a few SDF files.

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• 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 and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.02%. Comparing base (5a76b28) to head (339e681).
Report is 15 commits behind head on gz-sim7.

Additional details and impacted files

@@             Coverage Diff             @@
##           gz-sim7    #2426      +/-   ##
===========================================
+ Coverage    64.72%   65.02%   +0.30%     
===========================================
  Files          357      361       +4     
  Lines        29160    29624     +464     
===========================================
+ Hits         18874    19264     +390     
- Misses       10286    10360      +74     

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