fix: update logviz docs

[jancionear]

Running cargo test -p near-chunks test_multi -- --show-output doesn't produce any output because the test doesn't exist anymore. Let's update the docs to use a test that exists on current master.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.39%. Comparing base (8b861f8) to head (8c46af1).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #12815      +/-   ##
==========================================
- Coverage   70.40%   70.39%   -0.01%     
==========================================
  Files         851      851              
  Lines      174188   174188              
  Branches   174188   174188              
==========================================
- Hits       122634   122619      -15     
- Misses      46311    46322      +11     
- Partials     5243     5247       +4     

Flag	Coverage Δ
backward-compatibility	0.16% <ø> (ø)
db-migration	0.16% <ø> (ø)
genesis-check	1.41% <ø> (ø)
linux	70.07% <ø> (+<0.01%)	⬆️
linux-nightly	70.03% <ø> (-0.01%)	⬇️
pytests	1.71% <ø> (ø)
sanity-checks	1.52% <ø> (ø)
unittests	70.22% <ø> (-0.01%)	⬇️
upgradability	0.20% <ø> (ø)

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