fix: fixes to config and readme

[ewanharris]

Description

Copies across some changes from the sdk-generator repo

References

openfga/sdk-generator#371
openfga/sdk-generator#372 (will close #104)

Review Checklist

• I have clicked on "allow edits by maintainers".
• I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• The correct base branch is being used, if not main
• I have added tests to validate that the change in functionality is working as expected

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 23.59%. Comparing base (47a15e1) to head (93a526b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #107      +/-   ##
==========================================
+ Coverage   23.57%   23.59%   +0.02%     
==========================================
  Files          95       95              
  Lines        9953     9956       +3     
==========================================
+ Hits         2346     2349       +3     
  Misses       7357     7357              
  Partials      250      250              

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