fix maxValidators

[ylsGit]

• Targeted PR against correct branch (see CONTRIBUTING.md)

• [ ] Linked to github-issue with discussion and accepted design OR link to spec that describes this work.

• [ ] Wrote tests

• [ ] Updated relevant documentation (docs/)

• [ ] Added a relevant changelog entry to the Unreleased section in CHANGELOG.md

• [ ] Reviewed Files changed in the github PR explorer

---

For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge PR #XYZ: [title]" (coding standards)

[codecov-commenter]

Codecov Report

Attention: 36 lines in your changes are missing coverage. Please review.

Comparison is base (f1ce92c) 36.53% compared to head (fce3376) 36.51%. Report is 1 commits behind head on dev.

:exclamation: Current head fce3376 differs from pull request most recent head 183e190. Consider uploading reports for the commit 183e190 to get more accurate results

Files	Patch %	Lines
app/rpc/namespaces/eth/api.go	0.00%	35 Missing :warning:
x/staking/keeper/keeper_ibc_adapter.go	0.00%	1 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #3282 +/- ## ========================================== - Coverage 36.53% 36.51% -0.03% ========================================== Files 446 446 Lines 46869 46904 +35 ========================================== + Hits 17124 17126 +2 - Misses 28472 28506 +34 + Partials 1273 1272 -1 ```

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