docs: enable syntax highlighting to a code block

[huyenltnguyen]

Summary

A code block under the jest.createMockFromModule section is not having syntax highlighting.

Test plan

Screenshot of the change

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[codecov-commenter]

Codecov Report

Merging #11594 (4324ed6) into master (7be63ef) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #11594   +/-   ##
=======================================
  Coverage   69.00%   69.00%           
=======================================
  Files         312      312           
  Lines       16331    16331           
  Branches     4730     4730           
=======================================
  Hits        11269    11269           
  Misses       5034     5034           
  Partials       28       28           

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[SimenB]

Thanks! Can you update the versioned docs as well?

[huyenltnguyen]

Ah, sorry I missed them. Updated.

[SimenB]

thanks!

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