Fix typo in bounding box camera tutorial

[iche033]

🦟 Bug fix

Summary

fix minor typo

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

Merging #896 (ddf5a0a) into gz-rendering7 (a50cd70) will not change coverage.
The diff coverage is n/a.

❗ Current head ddf5a0a differs from pull request most recent head b6335a2. Consider uploading reports for the commit b6335a2 to get more accurate results

@@              Coverage Diff               @@
##           gz-rendering7     #896   +/-   ##
==============================================
  Coverage          77.23%   77.23%           
==============================================
  Files                170      170           
  Lines              14738    14738           
==============================================
  Hits               11383    11383           
  Misses              3355     3355