Update benchmarks doc to list all current tests

[cijothomas]

Fixed one TODO!

#1528 - Still working on this separately, which will include actual numbers for key scenarios, so readers don't have to go through the graphs themselves!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.16%. Comparing base (ba512a5) to head (459ab50).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1781      +/-   ##
==========================================
- Coverage   84.16%   84.16%   -0.01%     
==========================================
  Files         482      482              
  Lines      140170   140170              
==========================================
- Hits       117980   117970      -10     
- Misses      21656    21666      +10     
  Partials      534      534              

Components	Coverage Δ
otap-dataflow	85.37% <ø> (-0.02%)	⬇️
query_abstraction	80.61% <ø> (ø)
query_engine	90.54% <ø> (ø)
syslog_cef_receivers	∅ <ø> (∅)
otel-arrow-go	53.50% <ø> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[lalitb]

LGTM.

[albertlockett]

thanks again @cijothomas