test: add test for multicall revoke mixture of root and doc

[superical]

Summary

This PR adds an example of using bulk revoke to the readme documentation and an additional test for bulk revoking a mix of calls for a single document and root hash.

Changes

• Add test for bulk revoke with mix calls for single document and root hash
• Add bulk revoke example in readme documentation
• Bump prettier

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.78%. Comparing base (4495121) to head (c3d576c).
Report is 3 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #179      +/-   ##
==========================================
- Coverage   99.12%   98.78%   -0.35%     
==========================================
  Files           7        9       +2     
  Lines         114      164      +50     
  Branches        0       19      +19     
==========================================
+ Hits          113      162      +49     
- Misses          1        2       +1     

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