maint(ctb): minor comment cleanup

[smartcontracts]

Description
Cleans up a few minor issues with comments.
A clear and concise description of the features you're adding in this pull request.

Tests

Please describe any tests you've add

[changeset-bot]

⚠️ No Changeset found

Latest commit: 056a9df

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[codecov-commenter]

Codecov Report

Merging #4204 (056a9df) into develop (902985f) will decrease coverage by 0.06%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4204      +/-   ##
===========================================
- Coverage    42.93%   42.86%   -0.07%     
===========================================
  Files          319      319              
  Lines        17255    17255              
  Branches       776      776              
===========================================
- Hits          7408     7396      -12     
- Misses        9340     9348       +8     
- Partials       507      511       +4     

Flag	Coverage Δ
bedrock-go-tests	37.62% <ø> (-0.10%)	⬇️
contracts-bedrock-tests	38.38% <ø> (ø)
contracts-governance-tests	83.05% <ø> (ø)
contracts-periphery-tests	95.17% <ø> (ø)
contracts-tests	98.86% <ø> (ø)
core-utils-tests	60.41% <ø> (ø)
dtl-tests	47.15% <ø> (ø)
fault-detector-tests	42.17% <ø> (ø)
sdk-tests	39.40% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ontracts-bedrock/contracts/L1/L1StandardBridge.sol	100.00% <ø> (ø)
.../contracts-bedrock/contracts/L1/L2OutputOracle.sol	84.37% <ø> (ø)
...es/contracts-bedrock/contracts/L1/SystemConfig.sol	0.00% <ø> (ø)
...tracts-bedrock/contracts/L2/CrossDomainOwnable.sol	100.00% <ø> (ø)
...racts-bedrock/contracts/L2/CrossDomainOwnable2.sol	100.00% <ø> (ø)
...ontracts-bedrock/contracts/L2/L2StandardBridge.sol	81.81% <ø> (ø)
...cts-bedrock/contracts/universal/StandardBridge.sol	72.41% <ø> (ø)
op-node/p2p/discovery.go	67.01% <0.00%> (-3.10%)	⬇️
op-node/sources/batching.go	81.25% <0.00%> (-2.68%)	⬇️

[tynes]

Looks good to me, will approve after leaving comments, should auto merge once comments are addressed

[mergify]

This PR has been added to the merge queue, and will be merged soon.

[mergify]

This PR is next in line to be merged, and will be merged as soon as checks pass.