Updated small typo in identifier.js

[shail-mehta]

Summary

Updated small typo in identifier.js (Line Number 9) coverted should be converted

Fixes #148

Checklist

• My pull request is addressing an open issue (please create one otherwise).
• My code is tested and passes existing tests.
• My code follows the Tide Contributing Guide (updates are often made to the guidelines, check it out periodically).

[jeffpaul]

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