remove uvicorn from argument names

[aniketmaurya]

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?

Fixes # (issue).

This PR remove uvicorn details from LitServer.run argument name.
users don't need to know the detail about uvicorn server while running LitServe.

PR review

Anyone in the community is free to review the PR once the tests have passed.
If we didn't discuss your PR in GitHub issues there's a high chance it will not be merged.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79%. Comparing base (99b9dd7) to head (e090259).

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #199   +/-   ##
===================================
  Coverage    79%    79%           
===================================
  Files        13     13           
  Lines      1032   1040    +8     
===================================
+ Hits        813    824   +11     
+ Misses      219    216    -3