Fix spelling of IdentityAPI class in test

[eltociear]

Indentity -> Identity

Before submitting

• Was this discussed/agreed via a Github issue? (no need for typos and docs improvements)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure to update the docs?
• Did you write any new necessary tests?

What does this PR do?

Fix spelling of IdentityAPI in test_lit_server.py

PR review

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[aniketmaurya]

LGTM! thanks for the PR @eltociear 🚀

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82%. Comparing base (7923bc4) to head (79e86fe).
Report is 1 commits behind head on main.

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #222   +/-   ##
===================================
  Coverage    82%    82%           
===================================
  Files        13     13           
  Lines      1048   1048           
===================================
  Hits        855    855           
  Misses      193    193