Fix german translation

[henk23]

What does it do?

Fix german translation.

Why is it needed?

Resolves a bad impression on the first screen you get after installing strapi.

[strapi-cla]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #9623 (b642bd1) into master (13d3ee8) will decrease coverage by 0.09%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #9623      +/-   ##
==========================================
- Coverage   35.98%   35.88%   -0.10%     
==========================================
  Files        1337     1342       +5     
  Lines       14768    14809      +41     
  Branches     1475     1476       +1     
==========================================
  Hits         5314     5314              
- Misses       8536     8576      +40     
- Partials      918      919       +1     

Flag	Coverage Δ
front	27.25% <0.00%> (-0.11%)	⬇️
unit	55.54% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...-email/admin/src/containers/Settings/components.js	0.00% <0.00%> (ø)
...lugin-email/admin/src/containers/Settings/index.js	0.00% <0.00%> (ø)
packages/strapi-plugin-email/admin/src/index.js	0.00% <0.00%> (ø)
...kages/strapi-plugin-email/admin/src/permissions.js	0.00% <0.00%> (ø)
...ges/strapi-plugin-email/admin/src/utils/getTrad.js	0.00% <0.00%> (ø)
...ages/strapi-plugin-email/admin/src/utils/schema.js	0.00% <0.00%> (ø)
... and 1 more

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[soupette]

LGTM!

Thank you for your contribution