docs: file must appear after other fiels when using getFileStream

[dead-horse]

Checklist

• npm test passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

Description of change

closes #973

[mention-bot]

@dead-horse, thanks for your PR! By analyzing the history of the files in this pull request, we identified @huacnlee, @atian25 and @cuyl to be potential reviewers.

[codecov]

Codecov Report

Merging #982 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #982   +/-   ##
======================================
  Coverage    99.7%   99.7%           
======================================
  Files          28      28           
  Lines         675     675           
======================================
  Hits          673     673           
  Misses          2       2

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