make inactivity timout match docs

[msimerson]

fixes #2595

[codecov]

Codecov Report

Merging #2607 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2607   +/-   ##
=======================================
  Coverage   59.64%   59.64%           
=======================================
  Files          29       29           
  Lines        6413     6413           
  Branches     1588     1588           
=======================================
  Hits         3825     3825           
  Misses       2588     2588

Impacted Files	Coverage Δ
server.js	39.36% <ø> (ø)	⬆️

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