Documentation: Fix eslint errors

[gu-stav]

What does it do?

Fixes an eslint warning, which causes test failures on main.

Why is it needed?

Let's not state the obvious.

[codecov]

Codecov Report

Merging #14179 (4d2f722) into main (bb4e94e) will not change coverage.
The diff coverage is n/a.

❗ Current head 4d2f722 differs from pull request most recent head 365bcf3. Consider uploading reports for the commit 365bcf3 to get more accurate results

@@           Coverage Diff           @@
##             main   #14179   +/-   ##
=======================================
  Coverage   55.58%   55.58%           
=======================================
  Files        1275     1275           
  Lines       31833    31833           
  Branches     5734     5734           
=======================================
  Hits        17695    17695           
  Misses      12324    12324           
  Partials     1814     1814           

Flag	Coverage Δ
front	58.14% <ø> (ø)
unit	49.38% <ø> (ø)

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