Use safe quoting instead of \"%s\"

[phamminh0811]

1. Summary

Fixes #606

2.Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

3. Implementation details

4. How to test/use

5. Checklist

• Does the Readme need to be updated?

6. Limitations (optional)

7. Future Work (optional)

[anhductn2001]

lgtm!

[codecov]

Codecov Report

Merging #750 (e5f49d2) into main (8d361ad) will not change coverage.
The diff coverage is 33.33%.

@@           Coverage Diff           @@
##             main     #750   +/-   ##
=======================================
  Coverage   14.00%   14.00%           
=======================================
  Files         243      243           
  Lines       63049    63049           
=======================================
  Hits         8832     8832           
  Misses      53503    53503           
  Partials      714      714           

Flag	Coverage Δ
unittests	14.00% <33.33%> (ø)

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Files	Coverage Δ
x/interchainstaking/keeper/keeper.go	74.84% <33.33%> (ø)