Update flag wording based on docs review

[sgagniere]

Release Notes

Breaking Changes

• PLACEHOLDER

New Features

• PLACEHOLDER

Bug Fixes

• PLACEHOLDER

Checklist

• I have successfully built and used a custom CLI binary, without linter issues from this PR.
• I have clearly specified in the What section below whether this PR applies to Confluent Cloud, Confluent Platform, or both.
• I have verified this PR in Confluent Cloud pre-prod or production environment, if applicable.
• I have verified this PR in Confluent Platform on-premises environment, if applicable.
• I have attached manual CLI verification results or screenshots in the Test & Review section below.
• I have added appropriate CLI integration or unit tests for any new or updated commands and functionality.
  • Updated golden files
• I confirm that this PR introduces no breaking changes or backward compatibility issues.
• I have indicated the potential customer impact if something goes wrong in the Blast Radius section below.
• I have put checkmarks below confirming that the feature associated with this PR is enabled in:
  • Confluent Cloud prod
  • Confluent Cloud stag
  • Confluent Platform
  • Check this box if the feature is enabled for certain organizations only

What

A wording change to --environment flag for the Cloud confluent iam ip-filter commands based on docs feedback from v4.15.0 release.

Blast Radius

None. Just a docs update.

References

https://github.com/confluentinc/docs-confluent-cli/pull/951

Test & Review

integration tests and linter still pass.

[confluent-cla-assistant]

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Copilot reviewed 2 out of 4 changed files in this pull request and generated no comments.

Files not reviewed (2)

• test/fixtures/output/iam/ip-filter/create-help.golden: Language not supported
• test/fixtures/output/iam/ip-filter/list-help.golden: Language not supported