Standarize the representation of Governance param changes on cli requests.

[jgimeno]

Closes: #5783

Description

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For contributor use:

• 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.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer

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For admin use:

• Added appropriate labels to PR (ex. WIP, R4R, docs, etc)
• Reviewers assigned
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)

[codecov]

Codecov Report

Merging #5790 into master will decrease coverage by 0.03%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #5790      +/-   ##
==========================================
- Coverage   36.07%   36.03%   -0.04%     
==========================================
  Files         341      342       +1     
  Lines       34735    34782      +47     
==========================================
+ Hits        12530    12534       +4     
- Misses      20957    20998      +41     
- Partials     1248     1250       +2

Impacted Files	Coverage Δ
x/params/client/utils/utils.go	52.94% <ø> (ø)	⬆️
x/distribution/client/cli/utils.go	50% <ø> (+50%)	⬆️
x/distribution/client/cli/tx.go	4.7% <0%> (ø)	⬆️
x/params/client/cli/tx.go	0% <0%> (ø)

[alexanderbez]

LGTM, thanks @jgimeno -- just a few nitpicks.

[alexanderbez]

ACK 🎉