chore: fix some struct names in comment

[longxiangqiao]

Which problem is this PR solving?

Description of the changes

fix some struct names in comment

How was this change tested?

No need

Checklist

• I have read https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
• I have signed all commits
• I have added unit tests for the new functionality
• I have run lint and test steps successfully
  • for jaeger: make lint test
  • for jaeger-ui: yarn lint and yarn test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.42%. Comparing base (4d1c7d8) to head (23ad8fb).
Report is 30 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #6253       +/-   ##
===========================================
+ Coverage   48.76%   96.42%   +47.66%     
===========================================
  Files         179      355      +176     
  Lines       10803    20150     +9347     
===========================================
+ Hits         5268    19430    +14162     
+ Misses       5092      531     -4561     
+ Partials      443      189      -254     

Flag	Coverage Δ
badger_v1	8.31% <ø> (ø)
badger_v2	1.67% <ø> (ø)
cassandra-4.x-v1	14.39% <ø> (ø)
cassandra-4.x-v2	1.61% <ø> (ø)
cassandra-5.x-v1	14.39% <ø> (ø)
cassandra-5.x-v2	1.61% <ø> (ø)
elasticsearch-6.x-v1	18.59% <ø> (ø)
elasticsearch-7.x-v1	18.68% <ø> (ø)
elasticsearch-8.x-v1	18.85% <ø> (ø)
elasticsearch-8.x-v2	1.67% <ø> (+<0.01%)	⬆️
grpc_v1	9.44% <ø> (ø)
grpc_v2	6.98% <ø> (ø)
kafka-v1	8.88% <ø> (ø)
kafka-v2	1.67% <ø> (ø)
memory_v2	1.67% <ø> (ø)
opensearch-1.x-v1	18.73% <ø> (ø)
opensearch-2.x-v1	18.73% <ø> (ø)
opensearch-2.x-v2	1.66% <ø> (-0.01%)	⬇️
tailsampling-processor	0.46% <ø> (ø)
unittests	95.33% <ø> (?)

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