Update config.md

[glederer]

What is accomplished by your PR?

just spelling check :)

Is there something controversial in your PR?

No

Link to the Issue

No

Checklist

New Feature / Bug Fix

• Run unit tests to ensure all existing tests are still passing
• Add new passing unit tests to cover the code introduced by your PR
• Add new documentation for the code introduced by your PR

[codecov]

Codecov Report

Merging #255 into next will not change coverage.
The diff coverage is n/a.

@@         Coverage Diff         @@
##           next   #255   +/-   ##
===================================
  Coverage   100%   100%           
===================================
  Files        64     64           
  Lines      1264   1264           
  Branches    171    171           
===================================
  Hits       1264   1264

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[devCrossNet]

LGTM 👍