Update video recorder tutorial screenshot

[iche033]

🦟 Bug fix

Fixes gazebosim/gazebo_test_cases#396

Summary

Updates screenshot and text describing the screenshot

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)
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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.

[mjcarroll]

Can you get a screenshot without the cutoff reset button?

[iche033]

yep done, 61348da

[codecov]

Codecov Report

Merging #2135 (1ba63f7) into gz-sim7 (183c04f) will increase coverage by 0.01%.
Report is 1 commits behind head on gz-sim7.
The diff coverage is 100.00%.

❗ Current head 1ba63f7 differs from pull request most recent head 61348da. Consider uploading reports for the commit 61348da to get more accurate results

@@             Coverage Diff             @@
##           gz-sim7    #2135      +/-   ##
===========================================
+ Coverage    65.01%   65.02%   +0.01%     
===========================================
  Files          356      356              
  Lines        28929    28932       +3     
===========================================
+ Hits         18808    18814       +6     
+ Misses       10121    10118       -3     

Files Changed	Coverage Δ
...int_position_controller/JointPositionController.cc	59.09% <100.00%> (+3.02%)	⬆️

... and 1 file with indirect coverage changes