fix: emr IAM policy statements in docs

[forrest-not-gump]

Fixes

Summary

The existing read-only mode JSON IAM policy contains an invalid service name for Amazon EMR, causing errors: "Invalid Service In Action: The service emr:<action> specified in the action does not exist"

Changes

Replaced abbreviated 'emr' service name with full service name 'elasticmapreduce' in read-only IAM policy JSON. 'emr' is not a valid service name for policies in IAM. This change resolves IAM policy errors mentioned above.

User experience

User IAM policy will no longer contain incorrect service:action statements that cause permissions errors when using EMR

Checklist

If your change doesn't seem to apply, please leave them unchecked.

• [ x] I have reviewed the contributing guidelines
• [ x] I have performed a self-review of this change
• [ x] Changes have been tested
• [ x] Changes are documented

Is this a breaking change? (Y/N) - N

RFC issue number:

Checklist:
N/A

• Migration process documented
• Implement warnings (if it can live side by side)

Acknowledgment

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of the project license.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.17%. Comparing base (c49497b) to head (15b2db9).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1424      +/-   ##
==========================================
- Coverage   89.45%   89.17%   -0.29%     
==========================================
  Files         726      639      -87     
  Lines       50351    44348    -6003     
  Branches     7951     7079     -872     
==========================================
- Hits        45044    39547    -5497     
+ Misses       3452     3129     -323     
+ Partials     1855     1672     -183     

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