docs: add missing example return value for internet.jwt

[xDivisionByZerox]

Description

See title 😄

Originally found by @xDivisionByZerox in #3284 (comment)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.96%. Comparing base (b390432) to head (5b7e2a7).
Report is 3 commits behind head on next.

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #3286      +/-   ##
==========================================
- Coverage   99.96%   99.96%   -0.01%     
==========================================
  Files        2806     2806              
  Lines      217157   217157              
  Branches      982      977       -5     
==========================================
- Hits       217088   217084       -4     
- Misses         69       73       +4     

Files with missing lines	Coverage Δ
src/modules/internet/index.ts	100.00% <ø> (ø)

... and 2 files with indirect coverage changes